231 Area CodeMuskegon, MI
Area code 231 covers Muskegon and nearby communities in Michigan, in the Eastern Time (ET) zone, home to about 683,257 people across 139 cities. It's the only area code for this region, so the three digits alone place the caller.
Where is area code 231?
Area code 231 serves part of Muskegon, MI and the surrounding areas. It is a unique area code with no overlays.
Overview of the 231 Area Code
What is the 231 area code?
The 231 area code serves Muskegon, Michigan. When you see a 231 number, it indicates a local number within this geographic area.
Why was area code 231 created?
Area code 231 went into service on June 5, 1999, taking over territory that had been part of area code 616.
Geographic Coverage of the 231 Area Code
The 231 area code serves Muskegon and surrounding areas in Michigan. It operates within the Eastern Time (ET) time zone. This area code covers several key cities, including:
- Muskegon
- Norton Shores
- Traverse City
- Cadillac
- Muskegon Heights
- Big Rapids
Got a call from a 231 number? It came from Muskegon, MI. No other area code overlaps the 231 territory, so the prefix alone identifies where the caller is. Of the listed cities' population, Muskegon accounts for about 15.5%; the rest is split across 138 smaller cities.
Muskegon Area Code Overview
The 231 area code provides comprehensive telephone coverage for Muskegon and its surrounding communities. As the sole area code for this region, it uniquely identifies all local numbers within the service area.
What cities does area code 231 cover?
| City | State | Population | Population in 231 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Muskegon | MI | 37,287 | 37,287 | 15.5% | 100.0% |
| Norton Shores | MI | 25,070 | 25,070 | 10.4% | 100.0% |
| Traverse City | MI | 15,782 | 15,782 | 6.5% | 100.0% |
| Cadillac | MI | 10,521 | 10,521 | 4.4% | 100.0% |
| Muskegon Heights | MI | 9,806 | 9,806 | 4.1% | 100.0% |
| Big Rapids | MI | 8,565 | 8,565 | 3.6% | 100.0% |
| Ludington | MI | 7,577 | 7,577 | 3.1% | 100.0% |
| Manistee | MI | 6,241 | 6,241 | 2.6% | 100.0% |
| Petoskey | MI | 5,810 | 5,810 | 2.4% | 100.0% |
| Cheboygan | MI | 4,831 | 4,831 | 2.0% | 100.0% |
| Fremont | MI | 4,617 | 4,617 | 1.9% | 100.0% |
| Roosevelt Park | MI | 4,133 | 4,133 | 1.7% | 100.0% |
| Wolf Lake | MI | 4,104 | 4,104 | 1.7% | 100.0% |
| North Muskegon | MI | 4,089 | 4,089 | 1.7% | 100.0% |
| Boyne City | MI | 3,821 | 3,821 | 1.6% | 100.0% |
| Whitehall | MI | 3,130 | 3,130 | 1.3% | 100.0% |
| Canadian Lakes | MI | 2,756 | 2,756 | 1.1% | 100.0% |
| Newaygo | MI | 2,556 | 2,556 | 1.1% | 100.0% |
| Reed City | MI | 2,531 | 2,531 | 1.1% | 100.0% |
| Montague | MI | 2,425 | 2,425 | 1.0% | 100.0% |
| Charlevoix | MI | 2,332 | 2,332 | 1.0% | 100.0% |
| Kalkaska | MI | 2,255 | 2,255 | 0.9% | 100.0% |
| East Jordan | MI | 2,243 | 2,243 | 0.9% | 100.0% |
| Shelby | MI | 2,176 | 2,176 | 0.9% | 100.0% |
| Hart | MI | 2,059 | 2,059 | 0.9% | 100.0% |
| Indian River | MI | 1,959 | 1,959 | 0.8% | 100.0% |
| Howard City | MI | 1,924 | 1,924 | 0.8% | 100.0% |
| Evart | MI | 1,782 | 1,782 | 0.7% | 100.0% |
| Twin Lake | MI | 1,720 | 1,720 | 0.7% | 100.0% |
| Elk Rapids | MI | 1,605 | 1,605 | 0.7% | 100.0% |
| Greilickville | MI | 1,530 | 1,530 | 0.6% | 100.0% |
| Manton | MI | 1,530 | 1,530 | 0.6% | 100.0% |
| White Cloud | MI | 1,519 | 1,519 | 0.6% | 100.0% |
| Kingsley | MI | 1,445 | 1,445 | 0.6% | 100.0% |
| Ravenna | MI | 1,401 | 1,401 | 0.6% | 100.0% |
| Mancelona | MI | 1,391 | 1,391 | 0.6% | 100.0% |
| Scottville | MI | 1,355 | 1,355 | 0.6% | 100.0% |
| Rapid City | MI | 1,352 | 1,352 | 0.6% | 100.0% |
| Lakewood Club | MI | 1,334 | 1,334 | 0.6% | 100.0% |
| Frankfort | MI | 1,276 | 1,276 | 0.5% | 100.0% |
| Harbor Springs | MI | 1,262 | 1,262 | 0.5% | 100.0% |
| Fruitport | MI | 1,165 | 1,165 | 0.5% | 100.0% |
| Bellaire | MI | 1,045 | 1,045 | 0.4% | 100.0% |
| Baldwin | MI | 1,020 | 1,020 | 0.4% | 100.0% |
| Grant | MI | 987 | 987 | 0.4% | 100.0% |
| Central Lake | MI | 979 | 979 | 0.4% | 100.0% |
| Hesperia | MI | 977 | 977 | 0.4% | 100.0% |
| Chums Corner | MI | 946 | 946 | 0.4% | 100.0% |
| Lakes of the North | MI | 925 | 925 | 0.4% | 100.0% |
| Pentwater | MI | 899 | 899 | 0.4% | 100.0% |
| Mackinaw City | MI | 840 | 840 | 0.4% | 100.0% |
| Lake City | MI | 834 | 834 | 0.3% | 100.0% |
| Pellston | MI | 801 | 801 | 0.3% | 100.0% |
| Marion | MI | 798 | 798 | 0.3% | 100.0% |
| Alanson | MI | 781 | 781 | 0.3% | 100.0% |
| Buckley | MI | 775 | 775 | 0.3% | 100.0% |
| Grawn | MI | 772 | 772 | 0.3% | 100.0% |
| Bay Shore | MI | 754 | 754 | 0.3% | 100.0% |
| Parkdale | MI | 704 | 704 | 0.3% | 100.0% |
| McBain | MI | 639 | 639 | 0.3% | 100.0% |
| Mackinac Island | MI | 613 | 0 | 0.3% | 0.0% |
| Interlochen | MI | 583 | 583 | 0.2% | 100.0% |
| Suttons Bay | MI | 580 | 580 | 0.2% | 100.0% |
| Oak Hill | MI | 569 | 569 | 0.2% | 100.0% |
| Benzonia | MI | 564 | 564 | 0.2% | 100.0% |
| South Boardman | MI | 536 | 536 | 0.2% | 100.0% |
| Morley | MI | 527 | 527 | 0.2% | 100.0% |
| Kaleva | MI | 523 | 523 | 0.2% | 100.0% |
| Horton Bay | MI | 512 | 512 | 0.2% | 100.0% |
| Northport | MI | 499 | 499 | 0.2% | 100.0% |
| Thompsonville | MI | 489 | 489 | 0.2% | 100.0% |
| Mecosta | MI | 475 | 475 | 0.2% | 100.0% |
| Fife Lake | MI | 471 | 471 | 0.2% | 100.0% |
| New Era | MI | 462 | 462 | 0.2% | 100.0% |
| Manistee Lake | MI | 456 | 456 | 0.2% | 100.0% |
| Rothbury | MI | 450 | 450 | 0.2% | 100.0% |
| Hardwood Acres | MI | 432 | 432 | 0.2% | 100.0% |
| Mesick | MI | 415 | 415 | 0.2% | 100.0% |
| Brethren | MI | 410 | 410 | 0.2% | 100.0% |
| Eastlake | MI | 407 | 407 | 0.2% | 100.0% |
| Onekama | MI | 401 | 401 | 0.2% | 100.0% |
| Leland | MI | 377 | 377 | 0.2% | 100.0% |
| Boyne Falls | MI | 375 | 375 | 0.2% | 100.0% |
| Hersey | MI | 365 | 365 | 0.2% | 100.0% |
| Oden | MI | 363 | 363 | 0.2% | 100.0% |
| Ellsworth | MI | 363 | 363 | 0.2% | 100.0% |
| Carp Lake | MI | 357 | 357 | 0.1% | 100.0% |
| Empire | MI | 356 | 356 | 0.1% | 100.0% |
| Honor | MI | 334 | 334 | 0.1% | 100.0% |
| Advance | MI | 328 | 328 | 0.1% | 100.0% |
| Haring | MI | 328 | 328 | 0.1% | 100.0% |
| Bear Lake | MI | 327 | 327 | 0.1% | 100.0% |
| Bear Lake | MI | 327 | 327 | 0.1% | 100.0% |
| Luther | MI | 318 | 318 | 0.1% | 100.0% |
| Elberta | MI | 316 | 316 | 0.1% | 100.0% |
| Wellston | MI | 311 | 311 | 0.1% | 100.0% |
| Beulah | MI | 310 | 310 | 0.1% | 100.0% |
| Custer | MI | 300 | 300 | 0.1% | 100.0% |
| Alba | MI | 295 | 295 | 0.1% | 100.0% |
| Arcadia | MI | 291 | 291 | 0.1% | 100.0% |
| Walloon Lake | MI | 290 | 290 | 0.1% | 100.0% |
| Wolverine | MI | 281 | 281 | 0.1% | 100.0% |
| Walkerville | MI | 273 | 273 | 0.1% | 100.0% |
| Omena | MI | 267 | 267 | 0.1% | 100.0% |
| Jennings | MI | 264 | 264 | 0.1% | 100.0% |
| Le Roy | MI | 255 | 255 | 0.1% | 100.0% |
| Tustin | MI | 255 | 255 | 0.1% | 100.0% |
| Lake Leelanau | MI | 253 | 253 | 0.1% | 100.0% |
| Lake Ann | MI | 251 | 251 | 0.1% | 100.0% |
| Wedgewood | MI | 237 | 237 | 0.1% | 100.0% |
| Glen Arbor | MI | 229 | 229 | 0.1% | 100.0% |
| Eastport | MI | 218 | 218 | 0.1% | 100.0% |
| Brutus | MI | 218 | 218 | 0.1% | 100.0% |
| Levering | MI | 215 | 215 | 0.1% | 100.0% |
| Stanwood | MI | 209 | 209 | 0.1% | 100.0% |
| Bendon | MI | 208 | 208 | 0.1% | 100.0% |
| Maple City | MI | 207 | 207 | 0.1% | 100.0% |
| St. James | MI | 205 | 205 | 0.1% | 100.0% |
| Conway | MI | 204 | 204 | 0.1% | 100.0% |
| Copemish | MI | 196 | 196 | 0.1% | 100.0% |
| Fountain | MI | 181 | 181 | 0.1% | 100.0% |
| Boon | MI | 167 | 167 | 0.1% | 100.0% |
| Stronach | MI | 162 | 162 | 0.1% | 100.0% |
| Harrietta | MI | 159 | 159 | 0.1% | 100.0% |
| Free Soil | MI | 149 | 149 | 0.1% | 100.0% |
| Norwood | MI | 142 | 142 | 0.1% | 100.0% |
| Ironton | MI | 140 | 140 | 0.1% | 100.0% |
| Bay View | MI | 133 | 133 | 0.1% | 100.0% |
| Maple Grove | MI | 132 | 132 | 0.1% | 100.0% |
| Alden | MI | 125 | 125 | 0.1% | 100.0% |
| Filer City | MI | 116 | 116 | 0.0% | 100.0% |
| Nessen City | MI | 97 | 97 | 0.0% | 100.0% |
| Cedar | MI | 93 | 93 | 0.0% | 100.0% |
| Cross Village | MI | 93 | 93 | 0.0% | 100.0% |
| Ponshewaing | MI | 69 | 69 | 0.0% | 100.0% |
| Caberfae | MI | 64 | 64 | 0.0% | 100.0% |
| Crystal Mountain | MI | 54 | 54 | 0.0% | 100.0% |
| Crystal Downs Country Club | MI | 47 | 47 | 0.0% | 100.0% |
| Pilgrim | MI | 11 | 11 | 0.0% | 100.0% |
City population is shown in full. The share of each city inside 231 is measured from Census tract centroids, not estimated from a rate-center match – so a city split between two codes appears on both, at the fraction each one actually holds. The “% of listed-city population” column uses the full populations of the cities listed here.
What counties does area code 231 cover?
683,257 residents across 19 counties, counted inside the 231 boundary — a county split between codes contributes only its part.
| County | State | Population in 231 | % of area-code footprint | % of County |
|---|---|---|---|---|
| Muskegon County | MI | 171,404 | 25% | 97% |
| Grand Traverse County | MI | 95,238 | 14% | 100% |
| Newaygo County | MI | 44,979 | 7% | 90% |
| Mecosta County | MI | 34,633 | 5% | 87% |
| Emmet County | MI | 34,112 | 5% | 100% |
| Wexford County | MI | 33,673 | 5% | 100% |
| Mason County | MI | 29,052 | 4% | 100% |
| Oceana County | MI | 26,659 | 4% | 100% |
| Charlevoix County | MI | 26,054 | 4% | 100% |
| Cheboygan County | MI | 25,579 | 4% | 100% |
| Manistee County | MI | 25,032 | 4% | 100% |
| Antrim County | MI | 23,431 | 3% | 100% |
| Osceola County | MI | 22,891 | 3% | 100% |
| Leelanau County | MI | 19,568 | 3% | 88% |
| Benzie County | MI | 17,970 | 3% | 100% |
| Kalkaska County | MI | 17,939 | 3% | 100% |
| Missaukee County | MI | 15,052 | 2% | 100% |
| Lake County | MI | 12,096 | 2% | 100% |
| Montcalm County | MI | 7,895 | 1% | 12% |
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 231 been reported for unwanted calls?
Yes – 1,897 unwanted-call complaints were reported to the FTC for numbers showing a 231 area code (May 29 – Aug 14, 2026).
- 77% robocalls
- ↑ 13% vs prior period
Most-reported subjects
- Other37%705
- Reducing your debt (credit cards, mortgage, student loans)31%584
- Calls pretending to be government, businesses, or family and friends7%134
Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-08-17.
Which prefixes and exchanges belong to area code 231?
56% assigned to a telco
- 75% Landline
- 25% Wireless
- 0% Unknown
of 565 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (231)201- | Wireless | New Cingular Wireless Pcs |
| (231)202- | Wireless | New Cingular Wireless Pcs |
| (231)203- | Wireless | New Cingular Wireless Pcs |
| (231)204- | Wireless | Usa Mobility Wireless |
| (231)205- | Landline | Telnet Worldwide |
| (231)206- | Wireless | Sprint Spectrum |
| (231)207- | Landline | Telnet Worldwide |
| (231)208- | Landline | Telnet Worldwide |
| (231)209- | Landline | Telnet Worldwide |
| (231)212- | Landline | Centurylink Communications |
| (231)213- | Landline | Michigan Bell Tel Co |
| (231)214- | Wireless | Usa Mobility Wireless |
| (231)215- | Wireless | Verizon Wireless |
| (231)216- | Landline | Peerless Network Of Michigan |
| (231)217- | Landline | Telnet Worldwide |
| (231)218- | Wireless | Sprint Spectrum |
| (231)219- | Landline | Telnet Worldwide |
| (231)220- | Landline | 123.Net |
| (231)221- | Landline | Centurylink Communications |
| (231)222- | Landline | Level 3 Communications |
| (231)223- | Landline | Ace Tel. Co. Of Michigan |
| (231)224- | Landline | Bandwidth.Com Clec |
| (231)225- | Landline | Level 3 Communications |
| (231)226- | Landline | Telnet Worldwide |
| (231)227- | Landline | Charter Fiberlink - Michigan |
| (231)228- | Landline | Centurylink |
| (231)229- | Landline | Centurylink |
| (231)230- | Landline | Telnet Worldwide |
| (231)232- | Landline | Telnet Worldwide |
| (231)233- | Wireless | Verizon Wireless |
| (231)234- | Landline | Charter Fiberlink - Michigan |
| (231)235- | Landline | Telnet Worldwide |
| (231)236- | Landline | Telnet Worldwide |
| (231)237- | Landline | Michigan Bell Tel Co |
| (231)238- | Landline | Michigan Bell Tel Co |
| (231)239- | Wireless | Verizon Wireless |
| (231)240- | Landline | Telnet Worldwide |
| (231)241- | Landline | Daystarr Communications |
| (231)242- | Landline | Michigan Bell Tel Co |
| (231)243- | Landline | Telnet Worldwide |
| (231)244- | Landline | Centurylink Communications |
| (231)245- | Wireless | New Cingular Wireless Pcs |
| (231)246- | Landline | Comcast Ip Phone |
| (231)247- | Landline | Bandwidth.Com Clec |
| (231)249- | Landline | Bandwidth.Com Clec |
| (231)250- | Wireless | Verizon Wireless |
| (231)251- | Landline | Peerless Network Of Michigan |
| (231)252- | Landline | Bandwidth.Com Clec |
| (231)253- | Landline | Omnipoint Communications Midwest Operations |
| (231)254- | Landline | Omnipoint Communications Midwest Operations |
| (231)255- | Wireless | Usa Mobility Wireless |
| (231)256- | Landline | Michigan Bell Tel Co |
| (231)257- | Landline | Peninsula Fiber Network |
| (231)258- | Landline | Michigan Bell Tel Co |
| (231)259- | Landline | Charter Fiberlink - Michigan |
| (231)260- | Landline | Omnipoint Communications Midwest Operations |
| (231)261- | Landline | Peninsula Fiber Network |
| (231)262- | Landline | Acd Telecom |
| (231)263- | Landline | Centurylink |
| (231)264- | Landline | Michigan Bell Tel Co |
| (231)265- | Landline | Charter Fiberlink - Michigan |
| (231)266- | Landline | Michigan Bell Tel Co |
| (231)267- | Landline | Michigan Bell Tel Co |
| (231)268- | Wireless | Verizon Wireless |
| (231)269- | Landline | Ace Tel. Co. Of Michigan |
| (231)270- | Landline | Onvoy, Llcv |
| (231)271- | Landline | Centurylink |
| (231)272- | Landline | Onvoy, Llcv |
| (231)273- | Landline | Onvoy, Llcv |
| (231)274- | Landline | American Messaging Services |
| (231)275- | Landline | Centurylink |
| (231)276- | Landline | Michigan Bell Tel Co |
| (231)277- | Landline | Onvoy, Llcv |
| (231)278- | Landline | Onvoy Spectrum |
| (231)279- | Landline | Level 3 Communications |
| (231)280- | Landline | Onvoy, Llcv |
| (231)281- | Wireless | New Cingular Wireless Pcs |
| (231)282- | Wireless | New Cingular Wireless Pcs |
| (231)283- | Landline | Onvoy, Llcv |
| (231)284- | Landline | Omnipoint Communications Midwest Operations |
| (231)285- | Landline | Omnipoint Communications Midwest Operations |
| (231)286- | Wireless | Verizon Wireless |
| (231)287- | Wireless | Verizon Wireless |
| (231)288- | Wireless | New Cingular Wireless Pcs |
| (231)289- | Landline | Bandwidth.Com Clec |
| (231)290- | Wireless | New Cingular Wireless Pcs |
| (231)291- | Landline | Telnet Worldwide |
| (231)292- | Landline | Charter Fiberlink - Michigan |
| (231)293- | Landline | Hd Carrier |
| (231)294- | Landline | Onvoy, Llcv |
| (231)295- | Landline | Charter Fiberlink - Michigan |
| (231)296- | Landline | Charter Fiberlink - Michigan |
| (231)297- | Landline | Onvoy, Llcv |
| (231)298- | Landline | Charter Fiberlink - Michigan |
| (231)299- | Wireless | Sprint Spectrum |
| (231)300- | Landline | Onvoy, Llcv |
| (231)301- | Wireless | Verizon Wireless |
| (231)302- | Landline | Bandwidth.Com Clec |
| (231)303- | Landline | Teleport Communications America |
| (231)304- | Landline | Onvoy, Llcv |
| (231)305- | Landline | Telnet Worldwide |
| (231)306- | Landline | Telnet Worldwide |
| (231)307- | Wireless | New Cingular Wireless Pcs |
| (231)308- | Landline | Telnet Worldwide |
| (231)309- | Landline | Telnet Worldwide |
| (231)310- | Landline | Onvoy, Llcv |
| (231)312- | Landline | Telnet Worldwide |
| (231)313- | Wireless | New Cingular Wireless Pcs |
| (231)314- | Landline | Telnet Worldwide |
| (231)315- | Wireless | Usa Mobility Wireless |
| (231)316- | Landline | Telnet Worldwide |
| (231)317- | Wireless | Usa Mobility Wireless |
| (231)318- | Wireless | Usa Mobility Wireless |
| (231)319- | Landline | Telnet Worldwide |
| (231)320- | Landline | Bandwidth.Com Clec |
| (231)321- | Wireless | Verizon Wireless |
| (231)322- | Landline | Frontier North |
| (231)323- | Landline | Bandwidth.Com Clec |
| (231)324- | Landline | Teleport Communications America |
| (231)325- | Landline | Centurylink |
| (231)326- | Landline | Centurylink |
| (231)327- | Wireless | New Cingular Wireless Pcs |
| (231)328- | Landline | Centurylink |
| (231)329- | Wireless | New Cingular Wireless Pcs |
| (231)330- | Wireless | Verizon Wireless |
| (231)331- | Landline | Frontier North |
| (231)332- | Landline | Telnet Worldwide |
| (231)333- | Landline | Level 3 Communications |
| (231)334- | Landline | Centurylink |
| (231)335- | Wireless | New Cingular Wireless Pcs |
| (231)336- | Wireless | Usa Mobility Wireless |
| (231)337- | Wireless | New Cingular Wireless Pcs |
| (231)338- | Landline | Bandwidth.Com Clec |
| (231)339- | Landline | American Messaging Services |
| (231)340- | Wireless | Verizon Wireless |
| (231)341- | Landline | American Messaging Services |
| (231)342- | Wireless | Verizon Wireless |
| (231)343- | Wireless | Sprint Spectrum |
| (231)344- | Landline | Telnet Worldwide |
| (231)345- | Landline | Bandwidth.Com Clec |
| (231)346- | Landline | Telnet Worldwide |
| (231)347- | Landline | Michigan Bell Tel Co |
| (231)348- | Landline | Michigan Bell Tel Co |
| (231)349- | Wireless | Verizon Wireless |
| (231)350- | Wireless | Verizon Wireless |
| (231)351- | Landline | Telnet Worldwide |
| (231)352- | Landline | Michigan Bell Tel Co |
| (231)353- | Landline | Telnet Worldwide |
| (231)354- | Landline | Michigan Bell Tel Co |
| (231)355- | Landline | Telnet Worldwide |
| (231)356- | Landline | Telnet Worldwide |
| (231)357- | Wireless | Verizon Wireless |
| (231)358- | Landline | Telnet Worldwide |
| (231)359- | Landline | Charter Fiberlink - Michigan |
| (231)360- | Wireless | New Cingular Wireless Pcs |
| (231)361- | Landline | Telnet Worldwide |
| (231)362- | Landline | Kaleva Tel. Co. |
| (231)363- | Landline | Telnet Worldwide |
| (231)364- | Landline | Onvoy, Llcv |
| (231)365- | Landline | Telnet Worldwide |
| (231)366- | Landline | Level 3 Communications |
| (231)367- | Landline | Onvoy, Llcv |
| (231)368- | Landline | Telnet Worldwide |
| (231)369- | Landline | Ace Tel. Co. Of Michigan |
| (231)370- | Landline | Omnipoint Communications Midwest Operations |
| (231)371- | Landline | Bandwidth.Com Clec |
| (231)372- | Landline | Telnet Worldwide |
| (231)373- | Wireless | Verizon Wireless |
| (231)374- | Landline | Onvoy, Llcv |
| (231)375- | Wireless | Verizon Wireless |
| (231)376- | Landline | Onvoy, Llcv |
| (231)377- | Landline | Frontier North |
| (231)378- | Landline | Ace Tel. Co. Of Michigan |
| (231)379- | Landline | Bandwidth.Com Clec |
| (231)380- | Landline | Omnipoint Communications Midwest Operations |
| (231)381- | Landline | Charter Fiberlink - Michigan |
| (231)382- | Landline | American Messaging Services |
| (231)383- | Wireless | Verizon Wireless |
| (231)384- | Wireless | Verizon Wireless |
| (231)385- | Landline | Onvoy, Llcv |
| (231)386- | Landline | Michigan Bell Tel Co |
| (231)387- | Wireless | New Cingular Wireless Pcs |
| (231)388- | Wireless | Verizon Wireless |
| (231)389- | Landline | Michigan Bell Tel Co |
| (231)390- | Landline | Omnipoint Communications Midwest Operations |
| (231)391- | Landline | Bandwidth.Com Clec |
| (231)392- | Wireless | Sprint Spectrum |
| (231)393- | Landline | Onvoy Spectrum |
| (231)394- | Wireless | Verizon Wireless |
| (231)395- | Landline | Telnet Worldwide |
| (231)396- | Landline | Onvoy, Llcv |
| (231)397- | Landline | Omnipoint Communications Midwest Operations |
| (231)398- | Landline | Michigan Bell Tel Co |
| (231)399- | Landline | Acd Telecom |
| (231)400- | Landline | Onvoy, Llcv |
| (231)401- | Landline | Peninsula Fiber Network |
| (231)402- | Landline | Onvoy, Llcv |
| (231)403- | Landline | At&T |
| (231)404- | Wireless | New Cingular Wireless Pcs |
| (231)405- | Landline | Onvoy, Llcv |
| (231)406- | Landline | Onvoy, Llcv |
| (231)407- | Landline | Onvoy, Llcv |
| (231)408- | Wireless | New Cingular Wireless Pcs |
| (231)409- | Wireless | New Cingular Wireless Pcs |
| (231)410- | Wireless | New Cingular Wireless Pcs |
| (231)412- | Landline | Bandwidth.Com Clec |
| (231)413- | Landline | Omnipoint Communications Midwest Operations |
| (231)414- | Wireless | New Cingular Wireless Pcs |
| (231)415- | Landline | Charter Fiberlink - Michigan |
| (231)416- | Landline | American Messaging Services |
| (231)417- | Landline | Teleport Communications America |
| (231)420- | Wireless | Verizon Wireless |
| (231)421- | Landline | Charter Fiberlink - Michigan |
| (231)422- | Landline | Centurylink Communications |
| (231)423- | Landline | Lucre |
| (231)424- | Landline | Acd Telecom |
| (231)425- | Wireless | Sprint Spectrum |
| (231)427- | Landline | At&T |
| (231)429- | Wireless | Verizon Wireless |
| (231)431- | Landline | Onvoy Spectrum |
| (231)432- | Wireless | New Cingular Wireless Pcs |
| (231)433- | Wireless | Verizon Wireless |
| (231)434- | Wireless | New Cingular Wireless Pcs |
| (231)436- | Landline | Michigan Bell Tel Co |
| (231)437- | Wireless | Sprint Spectrum |
| (231)439- | Landline | Michigan Bell Tel Co |
| (231)440- | Landline | 123.Net |
| (231)441- | Landline | 123.Net |
| (231)442- | Landline | Peerless Network Of Michigan |
| (231)443- | Landline | Onvoy, Llcv |
| (231)444- | Landline | Onvoy, Llcv |
| (231)445- | Wireless | Verizon Wireless |
| (231)447- | Landline | Onvoy, Llcv |
| (231)448- | Landline | Island Tel. Co. |
| (231)449- | Landline | Charter Fiberlink - Michigan |
| (231)450- | Wireless | New Cingular Wireless Pcs |
| (231)452- | Landline | Comcast Ip Phone |
| (231)454- | Landline | Metropcs |
| (231)455- | Landline | Onvoy, Llcv |
| (231)457- | Landline | Acd Telecom |
| (231)459- | Landline | Ldmi |
| (231)460- | Landline | Onvoy, Llcv |
| (231)462- | Landline | Michigan Bell Tel Co |
| (231)463- | Wireless | Verizon Wireless |
| (231)464- | Landline | Michigan Bell Tel Co |
| (231)465- | Wireless | New Cingular Wireless Pcs |
| (231)466- | Landline | Onvoy Spectrum |
| (231)468- | Wireless | Sprint Spectrum |
| (231)475- | Landline | Bandwidth.Com Clec |
| (231)477- | Landline | Kaleva Tel. Co. |
| (231)480- | Landline | Level 3 Communications |
| (231)484- | Landline | Teleport Communications America |
| (231)486- | Landline | Mcimetro Access Transmission Services |
| (231)487- | Landline | Michigan Bell Tel Co |
| (231)488- | Landline | 123.Net |
| (231)489- | Landline | Peninsula Fiber Network |
| (231)492- | Wireless | Verizon Wireless |
| (231)493- | Landline | Omnipoint Communications Midwest Operations |
| (231)494- | Landline | American Messaging Services |
| (231)495- | Wireless | New Cingular Wireless Pcs |
| (231)497- | Wireless | New Cingular Wireless Pcs |
| (231)498- | Landline | Level 3 Communications |
| (231)499- | Wireless | Verizon Wireless |
| (231)500- | Landline | Onvoy, Llcv |
| (231)508- | Landline | Kaleva Telephone |
| (231)510- | Wireless | New Cingular Wireless Pcs |
| (231)512- | Landline | American Messaging Services |
| (231)514- | Landline | American Messaging Services |
| (231)515- | Landline | Acd Telecom |
| (231)516- | Landline | American Messaging Services |
| (231)518- | Landline | Level 3 Communications |
| (231)519- | Wireless | Verizon Wireless |
| (231)520- | Landline | 123.Net |
| (231)522- | Landline | 123.Net |
| (231)525- | Landline | Michigan Bell Tel Co |
| (231)526- | Landline | Michigan Bell Tel Co |
| (231)527- | Landline | Michigan Bell Tel Co |
| (231)529- | Landline | Centurylink |
| (231)531- | Landline | Metropcs |
| (231)532- | Landline | American Messaging Services |
| (231)533- | Landline | Frontier North |
| (231)534- | Landline | At&T |
| (231)535- | Landline | Michigan Bell Tel Co |
| (231)536- | Landline | Michigan Bell Tel Co |
| (231)537- | Landline | Centurylink |
| (231)538- | Landline | 123.Net |
| (231)539- | Landline | Michigan Bell Tel Co |
| (231)543- | Landline | Lucre |
| (231)544- | Landline | Frontier North |
| (231)545- | Landline | Charter Fiberlink - Michigan |
| (231)546- | Landline | Centurylink |
| (231)547- | Landline | Michigan Bell Tel Co |
| (231)548- | Landline | Centurylink |
| (231)549- | Landline | Centurylink |
| (231)550- | Landline | Metropcs |
| (231)557- | Wireless | Verizon Wireless |
| (231)559- | Landline | Bandwidth.Com Clec |
| (231)563- | Wireless | New Cingular Wireless Pcs |
| (231)564- | Wireless | New Cingular Wireless Pcs |
| (231)566- | Landline | Ton80 Communications |
| (231)567- | Landline | Teleport Communications America |
| (231)568- | Landline | 123.Net |
| (231)569- | Landline | American Messaging Services |
| (231)570- | Wireless | New Cingular Wireless Pcs |
| (231)571- | Landline | Frontier North |
| (231)577- | Landline | Level 3 Communications |
| (231)578- | Wireless | Sprint Spectrum |
| (231)580- | Wireless | Sprint Spectrum |
| (231)581- | Landline | Charter Fiberlink - Michigan |
| (231)582- | Landline | Michigan Bell Tel Co |
| (231)583- | Landline | 123.Net |
| (231)584- | Landline | Pigeon Tel. Co. |
| (231)585- | Landline | Pigeon Tel. Co. |
| (231)587- | Landline | Michigan Bell Tel Co |
| (231)588- | Landline | Frontier North |
| (231)590- | Wireless | Verizon Wireless |
| (231)591- | Landline | Michigan Bell Tel Co |
| (231)592- | Landline | Michigan Bell Tel Co |
| (231)593- | Wireless | Usa Mobility Wireless |
| (231)594- | Landline | Onvoy, Llcv |
| (231)596- | Wireless | Usa Mobility Wireless |
| (231)597- | Landline | Michigan Bell Tel Co |
| (231)598- | Wireless | New Cingular Wireless Pcs |
| (231)599- | Landline | Frontier North |
| (231)600- | Landline | Fractel |
| (231)604- | Wireless | Usa Mobility Wireless |
| (231)605- | Wireless | Usa Mobility Wireless |
| (231)606- | Wireless | Usa Mobility Wireless |
| (231)608- | Wireless | Usa Mobility Wireless |
| (231)613- | Wireless | New Cingular Wireless Pcs |
| (231)614- | Landline | 123.Net |
| (231)615- | Landline | American Messaging Services |
| (231)620- | Wireless | New Cingular Wireless Pcs |
| (231)622- | Landline | Level 3 Communications |
| (231)624- | Wireless | Sprint Spectrum |
| (231)625- | Landline | Michigan Bell Tel Co |
| (231)626- | Landline | Charter Fiberlink - Michigan |
| (231)627- | Landline | Michigan Bell Tel Co |
| (231)628- | Landline | American Messaging Services |
| (231)629- | Wireless | Sprint Spectrum |
| (231)631- | Wireless | Verizon Wireless |
| (231)632- | Wireless | New Cingular Wireless Pcs |
| (231)633- | Wireless | New Cingular Wireless Pcs |
| (231)634- | Landline | Island Tel. Co. |
| (231)635- | Landline | 123.Net |
| (231)636- | Landline | 123.Net |
| (231)637- | Landline | Telnet Worldwide |
| (231)638- | Wireless | Sprint Spectrum |
| (231)639- | Landline | 123.Net |
| (231)640- | Wireless | New Cingular Wireless Pcs |
| (231)642- | Wireless | Sprint Spectrum |
| (231)643- | Landline | 123.Net |
| (231)645- | Wireless | New Cingular Wireless Pcs |
| (231)646- | Landline | Frontier North |
| (231)647- | Landline | Telnet Worldwide |
| (231)648- | Landline | Level 3 Communications |
| (231)649- | Wireless | Verizon Wireless |
| (231)651- | Wireless | New Cingular Wireless Pcs |
| (231)652- | Landline | Michigan Bell Tel Co |
| (231)655- | Wireless | Verizon Wireless |
| (231)656- | Landline | 123.Net |
| (231)660- | Landline | 123.Net |
| (231)663- | Landline | Ton80 Communications |
| (231)666- | Landline | Onvoy, Llcv |
| (231)667- | Wireless | New Cingular Wireless Pcs |
| (231)668- | Landline | Level 3 Communications |
| (231)670- | Wireless | Verizon Wireless |
| (231)672- | Landline | At&T |
| (231)674- | Landline | Level 3 Communications |
| (231)675- | Wireless | New Cingular Wireless Pcs |
| (231)676- | Wireless | New Cingular Wireless Pcs |
| (231)678- | Landline | Acd Telecom |
| (231)679- | Wireless | Verizon Wireless |
| (231)680- | Landline | Level 3 Communications |
| (231)681- | Landline | Frontier North |
| (231)682- | Landline | Telnet Worldwide |
| (231)683- | Landline | Level 3 Communications |
| (231)685- | Landline | Charter Fiberlink - Michigan |
| (231)686- | Landline | 123.Net |
| (231)688- | Landline | Fractel |
| (231)689- | Landline | Michigan Bell Tel Co |
| (231)690- | Wireless | Verizon Wireless |
| (231)694- | Landline | Lucre |
| (231)695- | Landline | Telnet Worldwide |
| (231)698- | Landline | Lucre |
| (231)699- | Landline | Ton80 Communications |
| (231)707- | Landline | Onvoy, Llcv |
| (231)709- | Wireless | New Cingular Wireless Pcs |
| (231)712- | Landline | American Messaging Services |
| (231)714- | Wireless | Verizon Wireless |
| (231)715- | Wireless | New Cingular Wireless Pcs |
| (231)719- | Landline | Frontier North |
| (231)720- | Landline | Frontier North |
| (231)721- | Landline | 123.Net |
| (231)722- | Landline | Frontier North |
| (231)723- | Landline | Michigan Bell Tel Co |
| (231)724- | Landline | Frontier North |
| (231)725- | Landline | Frontier North |
| (231)726- | Landline | Frontier North |
| (231)727- | Landline | Frontier North |
| (231)728- | Landline | Frontier North |
| (231)729- | Wireless | New Cingular Wireless Pcs |
| (231)730- | Wireless | New Cingular Wireless Pcs |
| (231)731- | Landline | 123.Net |
| (231)732- | Landline | Onvoy Spectrum |
| (231)733- | Landline | Frontier North |
| (231)734- | Landline | Michigan Bell Tel Co |
| (231)735- | Wireless | Verizon Wireless |
| (231)736- | Landline | Frontier North |
| (231)737- | Landline | Frontier North |
| (231)739- | Landline | Frontier North |
| (231)740- | Wireless | Verizon Wireless |
| (231)742- | Wireless | New Cingular Wireless Pcs |
| (231)743- | Landline | Michigan Bell Tel Co |
| (231)744- | Landline | Frontier North |
| (231)745- | Landline | Michigan Bell Tel Co |
| (231)746- | Landline | Ton80 Communications |
| (231)747- | Landline | Frontier North |
| (231)750- | Wireless | New Cingular Wireless Pcs |
| (231)751- | Landline | Onvoy, Llcv |
| (231)753- | Landline | Ldmi |
| (231)755- | Landline | Frontier North |
| (231)757- | Landline | Michigan Bell Tel Co |
| (231)758- | Wireless | Sprint Spectrum |
| (231)759- | Landline | Frontier North |
| (231)760- | Landline | Frontier North |
| (231)762- | Landline | Michigan Central Broadband Company |
| (231)763- | Landline | Charter Fiberlink - Michigan |
| (231)764- | Landline | Telnet Worldwide |
| (231)766- | Landline | Frontier North |
| (231)767- | Landline | Frontier North |
| (231)768- | Landline | Michigan Bell Tel Co |
| (231)769- | Landline | Frontier North |
| (231)771- | Landline | Onvoy, Llcv |
| (231)772- | Landline | Ton80 Communications |
| (231)773- | Landline | Frontier North |
| (231)774- | Landline | Acd Telecom |
| (231)775- | Landline | Michigan Bell Tel Co |
| (231)776- | Landline | 123.Net |
| (231)777- | Landline | Frontier North |
| (231)778- | Landline | 123.Net |
| (231)779- | Landline | Michigan Bell Tel Co |
| (231)780- | Landline | Frontier North |
| (231)782- | Landline | 123.Net |
| (231)786- | Landline | Fractel |
| (231)787- | Landline | Onvoy, Llcv |
| (231)788- | Landline | Frontier North |
| (231)790- | Landline | Ldmi |
| (231)791- | Landline | Ldmi |
| (231)792- | Landline | 123.Net |
| (231)793- | Landline | At&T |
| (231)794- | Wireless | New Cingular Wireless Pcs |
| (231)796- | Landline | Michigan Bell Tel Co |
| (231)797- | Landline | Michigan Bell Tel Co |
| (231)798- | Landline | Frontier North |
| (231)799- | Landline | Frontier North |
| (231)800- | Landline | Onvoy, Llcv |
| (231)803- | Landline | Level 3 Communications |
| (231)805- | Landline | Acd Telecom |
| (231)806- | Landline | 123.Net |
| (231)808- | Landline | 123.Net |
| (231)813- | Landline | 123.Net |
| (231)818- | Wireless | New Cingular Wireless Pcs |
| (231)819- | Landline | Onvoy, Llcv |
| (231)821- | Landline | Frontier North |
| (231)822- | Landline | Telnet Worldwide |
| (231)823- | Landline | Frontier North |
| (231)824- | Landline | Michigan Bell Tel Co |
| (231)825- | Landline | Michigan Bell Tel Co |
| (231)826- | Landline | Centurylink |
| (231)828- | Landline | Frontier North |
| (231)829- | Landline | Michigan Bell Tel Co |
| (231)830- | Landline | Frontier North |
| (231)831- | Landline | Twilio International |
| (231)832- | Landline | Michigan Bell Tel Co |
| (231)833- | Wireless | New Cingular Wireless Pcs |
| (231)834- | Landline | Michigan Bell Tel Co |
| (231)835- | Wireless | New Cingular Wireless Pcs |
| (231)836- | Landline | 123.Net |
| (231)837- | Landline | American Messaging Services |
| (231)838- | Wireless | New Cingular Wireless Pcs |
| (231)839- | Landline | Centurylink |
| (231)842- | Landline | 123.Net |
| (231)843- | Landline | Frontier North |
| (231)844- | Landline | Level 3 Communications |
| (231)845- | Landline | Frontier North |
| (231)846- | Wireless | Sprint Spectrum |
| (231)848- | Landline | Kaleva Tel. Co. |
| (231)852- | Wireless | New Cingular Wireless Pcs |
| (231)853- | Landline | Frontier North |
| (231)854- | Landline | Frontier North |
| (231)855- | Wireless | New Cingular Wireless Pcs |
| (231)856- | Landline | Michigan Bell Tel Co |
| (231)859- | Landline | Kaleva Tel. Co. |
| (231)861- | Landline | Frontier North |
| (231)862- | Landline | Ace Tel. Co. Of Michigan |
| (231)864- | Landline | Centurylink |
| (231)865- | Landline | Frontier North |
| (231)866- | Wireless | New Cingular Wireless Pcs |
| (231)867- | Landline | Centurylink |
| (231)869- | Landline | Frontier North |
| (231)871- | Wireless | New Cingular Wireless Pcs |
| (231)872- | Wireless | New Cingular Wireless Pcs |
| (231)873- | Landline | Frontier North |
| (231)874- | Landline | 123.Net |
| (231)875- | Landline | Twilio International |
| (231)876- | Landline | Michigan Bell Tel Co |
| (231)877- | Landline | 123.Net |
| (231)878- | Wireless | Verizon Wireless |
| (231)879- | Landline | Michigan Bell Tel Co |
| (231)880- | Landline | Skyetel |
| (231)881- | Wireless | New Cingular Wireless Pcs |
| (231)882- | Landline | Michigan Bell Tel Co |
| (231)883- | Wireless | New Cingular Wireless Pcs |
| (231)884- | Wireless | New Cingular Wireless Pcs |
| (231)885- | Landline | Ace Tel. Co. Of Michigan |
| (231)886- | Wireless | New Cingular Wireless Pcs |
| (231)887- | Wireless | New Cingular Wireless Pcs |
| (231)888- | Landline | Onvoy, Llcv |
| (231)889- | Landline | Michigan Bell Tel Co |
| (231)890- | Landline | Michigan Bell Tel Co |
| (231)893- | Landline | Frontier North |
| (231)894- | Landline | Frontier North |
| (231)898- | Landline | Carr Tel. Co. |
| (231)899- | Landline | 123.Net |
| (231)900- | Landline | Fractel |
| (231)902- | Landline | Telnet Worldwide |
| (231)903- | Landline | Level 3 Communications |
| (231)907- | Wireless | New Cingular Wireless Pcs |
| (231)908- | Landline | 123.Net |
| (231)912- | Wireless | New Cingular Wireless Pcs |
| (231)916- | Landline | Level 3 Communications |
| (231)920- | Wireless | New Cingular Wireless Pcs |
| (231)922- | Landline | Michigan Bell Tel Co |
| (231)923- | Wireless | Sprint Spectrum |
| (231)924- | Landline | Michigan Bell Tel Co |
| (231)925- | Landline | 123.Net |
| (231)928- | Landline | Michigan Bell Tel Co |
| (231)929- | Landline | Michigan Bell Tel Co |
| (231)930- | Landline | Acd Telecom |
| (231)932- | Landline | Michigan Bell Tel Co |
| (231)933- | Landline | Michigan Bell Tel Co |
| (231)935- | Landline | Michigan Bell Tel Co |
| (231)936- | Landline | Ldmi |
| (231)937- | Landline | Frontier North |
| (231)938- | Landline | Michigan Bell Tel Co |
| (231)939- | Wireless | New Cingular Wireless Pcs |
| (231)941- | Landline | Michigan Bell Tel Co |
| (231)942- | Wireless | Verizon Wireless |
| (231)943- | Landline | Michigan Bell Tel Co |
| (231)944- | Landline | Cynergycomm.Net |
| (231)946- | Landline | Michigan Bell Tel Co |
| (231)947- | Landline | Michigan Bell Tel Co |
| (231)955- | Wireless | New Cingular Wireless Pcs |
| (231)963- | Landline | Ton80 Communications |
| (231)966- | Landline | Ton80 Communications |
| (231)968- | Landline | Bandwidth.Com Clec |
| (231)970- | Wireless | New Cingular Wireless Pcs |
| (231)972- | Landline | Centurylink |
| (231)974- | Landline | 123.Net |
| (231)977- | Landline | Fractel |
| (231)981- | Landline | Frontier North |
| (231)994- | Landline | Acd Telecom |
| (231)995- | Landline | Michigan Bell Tel Co |
| (231)999- | Landline | Onvoy, Llcv |
| No prefixes match “”. | ||
Frequently Asked Questions about the 231 Area Code
Who called me from a 231 number?
A 231 number is assigned to Muskegon, Michigan, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 231 code to look nearby, so a 231 number doesn't prove the caller is local. Recently, 1,897 unwanted-call complaints were reported to the FTC for numbers showing the 231 code (77% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 231 a scam area code?
No area code is a scam on its own. 231 is a normal, officially assigned code for Muskegon, Michigan. Spam callers spoof local codes to raise the odds you answer, so 231 on your caller ID says nothing about who is really calling. Recently, 1,897 unwanted-call complaints were reported to the FTC for numbers showing the 231 code (77% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 231 area code?
Repeated calls from different 231 numbers are usually spoofing: a robocaller rotates through 231 numbers so each call looks local and slips past simple blocks. Recently, 1,897 unwanted-call complaints were reported to the FTC for numbers showing the 231 code (77% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 231 number?
If you aren't expecting a 231 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 231 area code?
Block a single 231 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 231 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 231?
Area code 231 covers Muskegon and the surrounding area in Michigan, spanning 139 cities with about 683,257 residents. No other code overlays this region, so 231 alone identifies the area.
When did area code 231 go into service?
Area code 231 went into service on June 5, 1999. It was split off from area code 616.
Is 231 a real area code?
Yes. 231 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Muskegon, Michigan. A real code can still show up on spoofed spam calls, so treat unknown 231 calls with normal caution.
What timezone is the 231 area code in?
The 231 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 231 caller may not be in that zone.
How do I call a 231 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 231 and the seven-digit number. From a mobile phone you can usually just enter +1 231 followed by the number and let the phone add the exit code for you.