Michigan Area Codes
13 active area codes · Detroit · Population around 10,099,962
Michigan has 13 active area codes, serving cities like Detroit, Grand Rapids, and Warren. Of those, 5 are overlays covering ground another code already covers, which is why local calls there use all ten digits. The newest, 679, has been in service since November 7, 2025. Each code below links to its cities, carriers, timezone, and coverage map.
Michigan Area Code Map
What area codes does Michigan have?
- 231MuskegonEastern Time (ET) · 139 cities · 683,257
- 248OverlayTroyEastern Time (ET) · 41 cities · 1,340,164
- 269KalamazooEastern Time (ET) · 84 cities · 853,861
- 313OverlayDetroitEastern Time (ET) · 18 cities · 1,132,657
- 517LansingEastern Time (ET) · 77 cities · 912,497
- 586WarrenEastern Time (ET) · 14 cities · 898,448
- 616Grand RapidsEastern Time (ET) · 37 cities · 1,093,629
- 679OverlayDetroitEastern Time (ET) · 18 cities · 1,132,657
- 734OverlayAnn ArborEastern Time (ET) · 42 cities · 1,145,918
- 810FlintEastern Time (ET) · 51 cities · 770,579
- 906MarquetteEastern / Central · 60 cities · 291,140
- 947OverlayTroyEastern Time (ET) · 41 cities · 1,340,164
- 989SaginawEastern Time (ET) · 133 cities · 939,892
More than one of these codes covers 19 of the 83 counties in Michigan, and one county is covered by 5 of them. Each card counts the people inside that code's own boundary at the 2020 census. Adding all 13 gives 12,534,863, against the 10,077,331 the same census counts in those counties, because 2,457,532 residents fall inside more than one code.
Which cities are the largest in Michigan?
How many phone prefixes does Michigan use?
The area codes in Michigan hold 6,676 assigned prefixes between them, listed under 119 distinct carrier names. A prefix is the three digits after the area code, and NANPA assigns each one to a single carrier. One of the 13 codes here — 679 — is newer than the NANPA extract behind these numbers, so its prefixes are not counted above.
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.
Frequently Asked Questions
How many area codes does Michigan have?
Michigan has 13 active area codes: 231, 248, 269, 313, 517, 586, 616, 679, 734, 810, 906, 947, 989.
What is the main area code for Michigan?
Of the 13 area codes in Michigan, 313 is the oldest one still serving Detroit, its largest city. 313 has been in service since 1947.
What are the largest cities in Michigan?
The largest cities in Michigan include Detroit, Grand Rapids, Warren, Sterling Heights, Ann Arbor.
What is the total population of Michigan?
Michigan has an estimated total population of 10,099,962 based on US Census PEP 2024 data.
Do I have to dial ten digits in Michigan?
In the parts of Michigan covered by an overlay, yes. 5 of the 13 area codes here cover ground another code already covers, and where two codes share an area, local calls need the area code as well as the seven-digit number.
Why does Michigan have 13 area codes?
They arrived one at a time rather than all at once: 313 has been in service since 1947. 5 of the 13 are overlays, laid over a code that already covered the same ground instead of splitting its map in two. The most recent is 679, in service since November 7, 2025.
What is the newest area code in Michigan?
679, in service since November 7, 2025.
Is my county covered by more than one area code in Michigan?
It may be: more than one area code covers 19 of the 83 counties in Michigan, and one county there is covered by 5 of them. The table above shows which codes reach each of the largest cities.