640 Area CodeTrenton, NJ
Area code 640 covers Trenton and nearby communities in New Jersey, in the Eastern Time (ET) zone, home to about 1,251,379 people across 106 cities. It was added in 2018 as an overlay of 609, so the same region uses both codes and every local call needs all ten digits.
Overview
- Major City
- Trenton
- State
- New Jersey (NJ)
- Timezone
- Eastern Time (ET)
- Current Time
- –:––
- Overlay
- Yes – shares area with 609
Where is area code 640?
Area code 640 serves part of Trenton, NJ and the surrounding areas. It has a single overlay (609) that serves the same area.
Overview of the 640 Area Code
What is the 640 area code?
The 640 area code serves Trenton, New Jersey, alongside other established area codes. When you see a 640 number, it indicates a local number within this geographic area.
Why was area code 640 created?
Area code 640 went into service on September 17, 2018, as an overlay of 609. An overlay adds a second code to the same territory instead of splitting it: existing 609 numbers kept their digits, new lines began receiving 640 numbers, and local calls in the region require all ten digits.
Geographic Coverage of the 640 Area Code
The 640 area code serves Trenton and surrounding areas in New Jersey. It operates within the Eastern Time (ET) time zone. It complements the coverage of area code 609. This area code covers several key cities, including:
- Trenton
- Atlantic City
- Princeton
- Pleasantville
- Ocean Acres
- Hammonton
Got a call from a 640 number? It came from Trenton, NJ. Since 640 overlays with 609, every local call in the region needs all ten digits to land on the right line. Of the listed cities' population, Trenton accounts for about 15.7%; the rest is split across 105 smaller cities.
Trenton Area Codes Overview
Trenton is served by multiple area codes, reflecting its telecommunications needs. The 640 area code operates alongside 609. Here are the area codes serving this region:
The introduction of the 640 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 640 cover?
| City | State | Population | Population in 640 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Trenton | NJ | 91,193 | 91,193 | 15.7% | 100.0% |
| Atlantic City | NJ | 38,959 | 38,959 | 6.7% | 100.0% |
| Princeton | NJ | 31,445 | 31,445 | 5.4% | 100.0% |
| Pleasantville | NJ | 20,924 | 20,924 | 3.6% | 100.0% |
| Ocean Acres | NJ | 16,142 | 16,142 | 2.8% | 100.0% |
| Hammonton | NJ | 15,036 | 15,036 | 2.6% | 100.0% |
| Princeton Meadows | NJ | 13,834 | 13,834 | 2.4% | 100.0% |
| Mercerville | NJ | 13,230 | 13,230 | 2.3% | 100.0% |
| Hamilton Square | NJ | 12,784 | 12,784 | 2.2% | 100.0% |
| Browns Mills | NJ | 11,223 | 11,223 | 1.9% | 100.0% |
| Ocean City | NJ | 11,219 | 11,219 | 1.9% | 100.0% |
| Somers Point | NJ | 10,611 | 10,611 | 1.8% | 100.0% |
| Burlington | NJ | 10,143 | 10,143 | 1.7% | 100.0% |
| White Horse | NJ | 9,494 | 9,494 | 1.6% | 100.0% |
| Villas | NJ | 9,483 | 9,483 | 1.6% | 100.0% |
| Ventnor City | NJ | 9,372 | 9,372 | 1.6% | 100.0% |
| Absecon | NJ | 9,249 | 9,249 | 1.6% | 100.0% |
| Northfield | NJ | 8,527 | 8,527 | 1.5% | 100.0% |
| Mystic Island | NJ | 8,493 | 8,493 | 1.5% | 100.0% |
| Fort Dix | NJ | 7,716 | 7,716 | 1.3% | 100.0% |
| Brigantine | NJ | 7,697 | 7,697 | 1.3% | 100.0% |
| Twin Rivers | NJ | 7,443 | 7,443 | 1.3% | 100.0% |
| Smithville | NJ | 7,242 | 7,242 | 1.2% | 100.0% |
| Yardville | NJ | 7,186 | 7,186 | 1.2% | 100.0% |
| Pomona | NJ | 7,124 | 7,124 | 1.2% | 100.0% |
| Linwood | NJ | 7,072 | 7,072 | 1.2% | 100.0% |
| Hightstown | NJ | 5,978 | 5,978 | 1.0% | 100.0% |
| Cape May Court House | NJ | 5,338 | 5,338 | 0.9% | 100.0% |
| Forked River | NJ | 5,244 | 5,244 | 0.9% | 100.0% |
| Margate City | NJ | 5,239 | 5,239 | 0.9% | 100.0% |
| Wildwood | NJ | 5,098 | 5,098 | 0.9% | 100.0% |
| Egg Harbor City | NJ | 4,442 | 4,442 | 0.8% | 100.0% |
| Florence | NJ | 4,426 | 4,426 | 0.8% | 100.0% |
| Medford Lakes | NJ | 4,347 | 4,347 | 0.7% | 100.0% |
| Lambertville | NJ | 4,197 | 4,197 | 0.7% | 100.0% |
| Bordentown | NJ | 4,068 | 4,068 | 0.7% | 100.0% |
| Country Lake Estates | NJ | 3,943 | 3,943 | 0.7% | 100.0% |
| Beach Haven West | NJ | 3,896 | 3,896 | 0.7% | 100.0% |
| Lawrenceville | NJ | 3,887 | 3,887 | 0.7% | 100.0% |
| Roebling | NJ | 3,715 | 3,715 | 0.6% | 100.0% |
| McGuire AFB | NJ | 3,710 | 3,710 | 0.6% | 100.0% |
| Tuckerton | NJ | 3,701 | 3,701 | 0.6% | 100.0% |
| Leisuretowne | NJ | 3,582 | 3,582 | 0.6% | 100.0% |
| North Wildwood | NJ | 3,555 | 3,555 | 0.6% | 100.0% |
| North Cape May | NJ | 3,226 | 3,226 | 0.6% | 100.0% |
| Concordia | NJ | 3,092 | 3,092 | 0.5% | 100.0% |
| Robbinsville | NJ | 3,041 | 3,041 | 0.5% | 100.0% |
| Wildwood Crest | NJ | 3,036 | 3,036 | 0.5% | 100.0% |
| Groveville | NJ | 2,945 | 2,945 | 0.5% | 100.0% |
| Pennington | NJ | 2,906 | 2,906 | 0.5% | 100.0% |
| Barnegat | NJ | 2,817 | 2,817 | 0.5% | 100.0% |
| Cape May | NJ | 2,742 | 2,742 | 0.5% | 100.0% |
| Plainsboro Center | NJ | 2,712 | 2,712 | 0.5% | 100.0% |
| Rio Grande | NJ | 2,670 | 2,670 | 0.5% | 100.0% |
| Clearbrook Park | NJ | 2,667 | 2,667 | 0.5% | 100.0% |
| Rossmoor | NJ | 2,666 | 2,666 | 0.5% | 100.0% |
| Beverly | NJ | 2,543 | 2,543 | 0.4% | 100.0% |
| New Egypt | NJ | 2,512 | 2,512 | 0.4% | 100.0% |
| Whittingham | NJ | 2,476 | 2,476 | 0.4% | 100.0% |
| Princeton Junction | NJ | 2,465 | 2,465 | 0.4% | 100.0% |
| Pemberton Heights | NJ | 2,423 | 2,423 | 0.4% | 100.0% |
| Presidential Lakes Estates | NJ | 2,365 | 2,365 | 0.4% | 100.0% |
| Manahawkin | NJ | 2,303 | 2,303 | 0.4% | 100.0% |
| North Beach Haven | NJ | 2,235 | 2,235 | 0.4% | 100.0% |
| Whitesboro | NJ | 2,205 | 2,205 | 0.4% | 100.0% |
| Cranbury | NJ | 2,181 | 2,181 | 0.4% | 100.0% |
| Mays Landing | NJ | 2,135 | 2,135 | 0.4% | 100.0% |
| Erma | NJ | 2,134 | 2,134 | 0.4% | 100.0% |
| Woodbine | NJ | 2,122 | 2,122 | 0.4% | 100.0% |
| Sea Isle City | NJ | 2,122 | 2,122 | 0.4% | 100.0% |
| Ten Mile Run | NJ | 1,959 | 1,959 | 0.3% | 100.0% |
| Hopewell | NJ | 1,938 | 1,938 | 0.3% | 100.0% |
| Folsom | NJ | 1,840 | 1,840 | 0.3% | 100.0% |
| Allentown | NJ | 1,731 | 1,731 | 0.3% | 100.0% |
| Collings Lakes | NJ | 1,706 | 1,706 | 0.3% | 100.0% |
| Estell Manor | NJ | 1,699 | 1,699 | 0.3% | 100.0% |
| Waretown | NJ | 1,569 | 1,569 | 0.3% | 100.0% |
| Kingston | NJ | 1,493 | 1,493 | 0.3% | 100.0% |
| Elwood | NJ | 1,437 | 1,437 | 0.2% | 100.0% |
| Pemberton | NJ | 1,392 | 1,392 | 0.2% | 100.0% |
| Surf City | NJ | 1,298 | 1,298 | 0.2% | 100.0% |
| Avalon | NJ | 1,216 | 1,216 | 0.2% | 100.0% |
| Port Republic | NJ | 1,131 | 1,131 | 0.2% | 100.0% |
| Ship Bottom | NJ | 1,125 | 1,125 | 0.2% | 100.0% |
| Beach Haven | NJ | 1,069 | 1,069 | 0.2% | 100.0% |
| West Cape May | NJ | 995 | 995 | 0.2% | 100.0% |
| Longport | NJ | 884 | 884 | 0.2% | 100.0% |
| Roosevelt | NJ | 802 | 802 | 0.1% | 100.0% |
| Stone Harbor | NJ | 784 | 784 | 0.1% | 100.0% |
| Rocky Hill | NJ | 755 | 755 | 0.1% | 100.0% |
| Wrightstown | NJ | 731 | 731 | 0.1% | 100.0% |
| Burleigh | NJ | 725 | 725 | 0.1% | 100.0% |
| Barnegat Light | NJ | 641 | 641 | 0.1% | 100.0% |
| Belleplain | NJ | 597 | 597 | 0.1% | 100.0% |
| Fieldsboro | NJ | 547 | 547 | 0.1% | 100.0% |
| West Wildwood | NJ | 536 | 536 | 0.1% | 100.0% |
| Stockton | NJ | 499 | 499 | 0.1% | 100.0% |
| Corbin City | NJ | 486 | 486 | 0.1% | 100.0% |
| East Rocky Hill | NJ | 469 | 469 | 0.1% | 100.0% |
| Juliustown | NJ | 429 | 429 | 0.1% | 100.0% |
| Harvey Cedars | NJ | 402 | 402 | 0.1% | 100.0% |
| Cape May Point | NJ | 297 | 297 | 0.1% | 100.0% |
| Blawenburg | NJ | 280 | 280 | 0.1% | 100.0% |
| Skillman | NJ | 242 | 242 | 0.0% | 100.0% |
| Strathmere | NJ | 158 | 158 | 0.0% | 100.0% |
| Diamond Beach | NJ | 136 | 136 | 0.0% | 100.0% |
City population is shown in full. The share of each city inside 640 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 640 cover?
1,251,379 residents across 10 counties, counted inside the 640 boundary — a county split between codes contributes only its part.
| County | State | Population in 640 | % of area-code footprint | % of County |
|---|---|---|---|---|
| Mercer County | NJ | 387,340 | 31% | 100% |
| Burlington County | NJ | 271,091 | 22% | 59% |
| Atlantic County | NJ | 260,427 | 21% | 95% |
| Ocean County | NJ | 132,102 | 11% | 21% |
| Cape May County | NJ | 95,263 | 8% | 100% |
| Middlesex County | NJ | 52,543 | 4% | 6% |
| Somerset County | NJ | 15,206 | 1% | 4% |
| Monmouth County | NJ | 14,019 | 1% | 2% |
| Hunterdon County | NJ | 12,199 | 1% | 9% |
| Camden County | NJ | 11,189 | 1% | 2% |
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 640 been reported for unwanted calls?
Yes – 289 unwanted-call complaints were reported to the FTC for numbers showing a 640 area code (May 29 – Aug 14, 2026).
- 57% robocalls
- ↑ 68% vs prior period
Most-reported subjects
- Other45%130
- Reducing your debt (credit cards, mortgage, student loans)16%45
- Dropped call or no message13%37
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 640?
7% assigned to a telco
- 87% Landline
- 13% Wireless
- 0% Unknown
of 68 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (640)200- | Landline | Onvoy |
| (640)201- | Landline | Ip Horizon |
| (640)202- | Landline | Ip Horizon |
| (640)203- | Wireless | Verizon Wireless |
| (640)204- | Wireless | Verizon Wireless |
| (640)205- | Landline | Comcast Ip Phone |
| (640)206- | Landline | Comcast Ip Phone |
| (640)207- | Landline | Bandwidth.Com Clec |
| (640)208- | Wireless | Verizon Wireless |
| (640)209- | Landline | Omnipoint Communications Enterprises |
| (640)212- | Landline | Omnipoint Communications Enterprises |
| (640)213- | Landline | Omnipoint Communications Enterprises |
| (640)214- | Landline | Bandwidth.Com Clec |
| (640)216- | Landline | Bandwidth.Com Clec |
| (640)217- | Landline | Bandwidth.Com Clec |
| (640)218- | Landline | Bandwidth.Com Clec |
| (640)219- | Wireless | New Cingular Wireless Pcs |
| (640)220- | Landline | Onvoy Spectrum |
| (640)221- | Wireless | New Cingular Wireless Pcs |
| (640)222- | Landline | Terra Nova Telecom |
| (640)223- | Landline | Omnipoint Communications Enterprises |
| (640)224- | Landline | Onvoy Spectrum |
| (640)225- | Landline | Omnipoint Communications Enterprises |
| (640)226- | Landline | Bandwidth.Com Clec |
| (640)227- | Landline | Ton80 Communications |
| (640)228- | Wireless | New Cingular Wireless Pcs |
| (640)229- | Wireless | Dish Wireless |
| (640)230- | Landline | Omnipoint Communications Enterprises |
| (640)231- | Landline | Onvoy |
| (640)232- | Landline | Onvoy |
| (640)233- | Landline | Onvoy |
| (640)234- | Landline | Omnipoint Communications Enterprises |
| (640)235- | Landline | Omnipoint Communications Enterprises |
| (640)236- | Landline | Bandwidth.Com Clec |
| (640)238- | Landline | Nuso |
| (640)239- | Landline | Nuso |
| (640)240- | Wireless | New Cingular Wireless Pcs |
| (640)241- | Wireless | Verizon Wireless |
| (640)242- | Landline | Omnipoint Communications Enterprises |
| (640)243- | Landline | Onvoy |
| (640)245- | Landline | Nuso |
| (640)246- | Landline | Nuso |
| (640)266- | Landline | Ton80 Communications |
| (640)300- | Landline | Onvoy |
| (640)333- | Landline | Fractel |
| (640)344- | Landline | Onvoy Spectrum |
| (640)345- | Landline | Fractel |
| (640)356- | Landline | Fractel |
| (640)400- | Landline | Onvoy |
| (640)444- | Landline | Fractel |
| (640)466- | Landline | Ton80 Communications |
| (640)500- | Landline | Onvoy |
| (640)529- | Landline | Fractel |
| (640)600- | Landline | Onvoy |
| (640)614- | Landline | Onvoy |
| (640)644- | Landline | Onvoy Spectrum |
| (640)650- | Landline | Onvoy Spectrum |
| (640)666- | Landline | Fractel |
| (640)696- | Landline | Skyetel |
| (640)777- | Landline | Terra Nova Telecom |
| (640)800- | Landline | Onvoy |
| (640)837- | Landline | Coretel New Jersey |
| (640)866- | Landline | Ton80 Communications |
| (640)867- | Landline | Commio |
| (640)888- | Landline | Terra Nova Telecom |
| (640)900- | Landline | Onvoy |
| (640)962- | Landline | Onvoy |
| (640)999- | Landline | Fractel |
| No prefixes match “”. | ||
Frequently Asked Questions about the 640 Area Code
Who called me from a 640 number?
A 640 number is assigned to Trenton, New Jersey, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 640 code to look nearby, so a 640 number doesn't prove the caller is local. Recently, 289 unwanted-call complaints were reported to the FTC for numbers showing the 640 code (57% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 640 a scam area code?
No area code is a scam on its own. 640 is a normal, officially assigned code for Trenton, New Jersey. Spam callers spoof local codes to raise the odds you answer, so 640 on your caller ID says nothing about who is really calling. Recently, 289 unwanted-call complaints were reported to the FTC for numbers showing the 640 code (57% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 640 area code?
Repeated calls from different 640 numbers are usually spoofing: a robocaller rotates through 640 numbers so each call looks local and slips past simple blocks. Recently, 289 unwanted-call complaints were reported to the FTC for numbers showing the 640 code (57% 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 640 number?
If you aren't expecting a 640 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 640 area code?
Block a single 640 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 640 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 640?
Area code 640 covers Trenton and the surrounding area in New Jersey, spanning 106 cities with about 1,251,379 residents. It shares its area with overlay code 609.
When did area code 640 go into service?
Area code 640 went into service on September 17, 2018. It was added as an overlay of 609, so 640 numbers serve the same area that 609 already covered.
Is 640 a real area code?
Yes. 640 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Trenton, New Jersey. A real code can still show up on spoofed spam calls, so treat unknown 640 calls with normal caution.
What timezone is the 640 area code in?
The 640 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 640 caller may not be in that zone.
How do I call a 640 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 640 and the seven-digit number. From a mobile phone you can usually just enter +1 640 followed by the number and let the phone add the exit code for you.