Caller ID for
Area code 640
Area code 640 Atlantic City, New Jersey
Area code 640 is one of the newer area codes, added in 2018 to New Jersey, with numbers assigned in Atlantic City, Lawrenceville, Pleasantville and 30 more places. It’s 12:10 AM there now.
- State
- New Jersey10 area codes in New Jersey
- Time zone
- Eastern12:10 AM there now
- Exchanges
- 13333 places
- Overlay
- 609Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 640 is
Numbers in 640 are assigned to 33 places in 8 counties: Atlantic County, Mercer County, Burlington County, Ocean County, Cape May County, Middlesex County, plus 2 more.
No single place dominates: Atlantic City, the largest, has 14% of the exchanges.
- Atlantic City18
- Lawrenceville17
- Pleasantville14
- Trenton7
- Princeton7
- Allentown6
- Cranbury5
- Barnegat5
- Wildwood4
- New Egypt4
- Florence3
- Hammonton3
- Cape May Court House3
- Burlington3
- Medford Lakes3
- Tuckerton2
- Beach Haven2
- Pemberton2
- Plainsboro Center2
- Mays Landing2
- Sea Isle City2
- Egg Harbor City2
- Vincentown1
- Avalon1
Phone companies in 640
133 blocks of numbers in 640 are held by 23 phone companies. The most belong to AT&T Mobility (33), Inteliquent (27) and T-Mobile (16).
A large share, about 51%, belongs to competitive and internet phone carriers; wireless networks hold 44% and local phone and cable companies 5%.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
640 went into service in 2018, added to the area of 609.
609 (since 1957) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
117 new exchanges were assigned since 2021, the latest in October 2026.
Calling 640
It’s 12:10 AM Eastern time in 640 right now.
From elsewhere in the U.S., dial 1, 640 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
New Jersey has 10 area codes: 201, 551, 609, 640, 732, 848, 856, 862, 908 and 973.
- 856 · Camden, NJ · about 25 mi
- 215 · Philadelphia, PA · about 32 mi
- 445 · Philadelphia, PA · about 34 mi
- 267 · Philadelphia, PA · about 36 mi
- 848 · New Brunswick, NJ · about 43 mi
- 732 · New Brunswick, NJ · about 43 mi
From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.
Map of the 640 area code
Map of the 640 area code around Atlantic City, Lawrenceville and Pleasantville, New Jersey.
Cities on the map
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Questions about 640
Where is area code 640?
In New Jersey, covering Atlantic City, Lawrenceville and Pleasantville and other places across 8 counties.
What time zone is 640 in?
Eastern time. It was 12:10 AM there when this page loaded.
Is 640 an overlay?
Yes. 609 serves the same area, so dial all 10 digits for local calls.
Which phone companies have 640 numbers?
23 companies hold blocks; the most belong to AT&T Mobility, Inteliquent and T-Mobile. About 44% of blocks are wireless.
Is 640 running out of numbers?
Not on record. 117 new exchanges have been assigned since 2021.