640 Area Code
Covers Trenton and nearby communities in New Jersey.
(640) 555-0142Area code 640 map
Interactive coverage map for area code 640, centered on Trenton, New Jersey
40.2171, -74.7429
Open in OpenStreetMapArea code 640 coverage map — centered on Trenton. Shaded area shows the approximate reach around the primary city.
Calls tagged with area code 640 come from Trenton and nearby communities in New Jersey. It reaches roughly 124,000 people across places such as Trenton, Atlantic City, Ewing, Willingboro and more. The region observes Eastern time, so a number like (640) 555-0142 is on that clock right now. On the ground it spans Burlington, Atlantic, Mercer. It shares its territory with the overlay code 609, which sit on the exact same map. Because the 640 region uses more than one area code, you must dial all ten digits — area code included — even for a local call. You do not, however, need to dial a leading 1 for calls within the US and Canada. Keep reading for the current local time in Trenton, a map of the 640 coverage area, the places it reaches, nearby and overlay codes, and how to tell a real 640 call from a scam.
Cities covered by 640
Cities & neighborhoods
- Trenton
- Atlantic City
- Ewing
- Willingboro
Nearby & overlay area codes
Overlay codes (same area)
These share 640’s geography — a number in either code can be on the same street.
Neighboring codes
Codes for adjacent regions and metros.
Is a call from 640 a scam?
Area code 640 serves Trenton and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 640 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 640 number from abroad
Every 640 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 640 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 640 555-0142 - Australia
0011 1 640 555-0142 - Japan
010 1 640 555-0142 - Mexico
00 1 640 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 640 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 640: frequently asked questions
Where is the 640 area code located?
The 640 area code is located in New Jersey, centered on Trenton. It covers Burlington, Atlantic, Mercer and nearby communities including Trenton, Atlantic City, Ewing, Willingboro.
What time zone is 640 in?
Area code 640 is in the Eastern time zone (UTC-5 (EST) / UTC-4 (EDT)). You can see the exact current local time for Trenton on the live clock above.
What cities use area code 640?
Cities and areas that use 640 include Trenton, Atlantic City, Ewing, Willingboro. Its primary city is Trenton, NJ.
Do I need to dial 1 before 640?
For calls within the US, you do not need to dial a leading 1, but you do need all ten digits: 640 plus the seven-digit number. The 640 area requires ten-digit dialing because more than one area code serves it.
Is 640 a toll-free or scam number?
No — 640 is a normal geographic area code for Trenton, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 640 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 640?
Area code 640 is overlaid by 609, meaning those codes cover the same geographic area.