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AREA CODE · NEW JERSEY

Area code 640

Area code 640 covers Trenton, New Jersey. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: New Jersey Major City: Trenton Eastern Time (ET) Overlay: 609/640
01 / WHERE IT IS

Where is area code 640?

Area code 640 is assigned to Trenton and the surrounding region in New Jersey. Calls to numbers that start with 640 are routed to this area.

Area code 640 shares its territory with 609. Because it is an overlay, local calls require dialing all 10 digits.

Counties covered

Atlantic CountyMercer CountyBurlington CountyOcean CountyCape May CountyMiddlesex CountyMonmouth County

Line types

  • Mobile 51.64%
  • Landline 48.36%
02 / MAP

Area code 640 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Trenton

This area code is in the Eastern Time (ET) time zone.

Local timeTrenton, NJ--:--:--

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America/New_YorkLive
04 / HOW TO DIAL

How to call Trenton

WITHIN THE US640 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 640 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 640 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 640 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 640 555 0123
🇦🇺Australia0011 1 640 555 0123
🇯🇵Japan010 1 640 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 640

Share of the number blocks by carrier and line type.

Landline

Sinch
42%
Bandwidth
12%
Fractel
12%
CoreTel Communications
7%
Nuso
7%
Others
20%

Mobile

AT&T Mobility
46%
T-Mobile USA
27%
Verizon Wireless
13%
Sinch
8%
Boost Mobile
6%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 640

122 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(640) 200 Landline Florence (Burlington) SinchONVOY, LLC - NJ
(640) 201 Landline Pleasantville IP HorizonIP HORIZON LLC
(640) 202 Landline Trenton IP HorizonIP HORIZON LLC
(640) 203 Mobile Princeton Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ
(640) 204 Mobile Cranbury Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ
(640) 205 Landline Tuckerton ComcastCOMCAST IP PHONE, LLC
(640) 206 Landline Vincentown ComcastCOMCAST IP PHONE, LLC
(640) 207 Landline Avalon BandwidthBANDWIDTH.COM CLEC, LLC - NJ
(640) 208 Mobile Beach Haven Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ
(640) 209 Mobile Hammonton T-Mobile USAOMNIPOINT COMMUNICATIONS ENTERPRISES, LP

Showing 10 of 122 prefixes

07 / FAQ

Frequently asked questions about area code 640

Where is area code 640 used?
Area code 640 serves Trenton and the surrounding area in New Jersey, including Atlantic County, Mercer County, Burlington County, Ocean County, Cape May County.
What city is area code 640 from?
The main city of area code 640 is Trenton, NJ.
What time zone is area code 640 in?
Area code 640 is in the Eastern Time (ET) time zone (America/New_York).
Is 640 an overlay area code?
Yes. It shares its territory with 609. In an overlay, every call requires dialing all 10 digits.
How do I call a number with area code 640 from the United States?
Dial the 10 digits: 640 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 640 number from another country?
Dial your country's exit code (or +), then 1, then 640 and the seven-digit number. From a mobile you can use +1 640 XXX XXXX.
Which carriers use area code 640?
Most landline blocks belong to Sinch and most mobile blocks to AT&T Mobility. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 640 for landlines, mobiles or both?
Both. About 48.36% of the number blocks are landline, 51.64% mobile.
How do I save a 640 number in WhatsApp or my phone?
Save it in international format: +1 640 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 640?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

Nearby area codes

215Philadelphia, PA445Philadelphia, PA267Philadelphia, PA610Allentown, PA484Allentown, PA302Wilmington, DE

Other area codes in New Jersey

201 · Jersey City551 · Jersey City609 · Trenton732 · Toms River848 · Toms River856 · Camden862 · Newark908 · Elizabeth973 · Newark

View all New Jersey area codes →