Cities in area code 640
Area code 640 serves 35 localities in New Jersey, led by Atlantic City, Lawrenceville, Pleasantville. The table lists every rate center — the billing locality each prefix is anchored to — with its share of the code's 123 active prefixes.
Ranked by active prefixes, the code's territory runs through Atlantic City, Lawrenceville, Pleasantville, Princeton, Trenton, Cranbury, Barnegat and Mount Holly, and 26 smaller communities down to single-prefix localities.
Metropolitan coverage: 19 rate centers belong to FCC top-100 metro areas.
Overlap note: 35 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.
Clock-wise the coverage is Eastern.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Atlantic City | 16 | — | 609, 640 |
| Lawrenceville | 16 | — | 609, 640 |
| Pleasantville | 13 | — | 609, 640 |
| Princeton | 7 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| Trenton | 6 | — | 609, 640 |
| Cranbury | 5 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| Barnegat | 5 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| Mount Holly | 4 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Allentown | 4 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| New Egypt | 4 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| Hammonton | 3 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Cape May Court House | 3 | — | 609, 640 |
| Wildwood | 3 | — | 609, 640 |
| Burlington | 3 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Medford | 3 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Florence (burlington) | 2 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Tuckerton | 2 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| Beach Haven | 2 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| Pemberton | 2 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Plainsboro | 2 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| Mays Landing | 2 | — | 609, 640 |
| Sea Isle City | 2 | — | 609, 640 |
| Egg Harbor | 2 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Vincentown | 1 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Avalon | 1 | — | 609, 640 |
| Ewing | 1 | — | 609, 640 |
| Dennisville | 1 | — | 609, 640 |
| Bordentown | 1 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Mercerville | 1 | — | 609, 640 |
| Ocean City | 1 | — | 609, 640 |
| Hightstown | 1 | New York-Newark-Jersey City, NY-NJ | 609, 640 |
| Milmay | 1 | — | 609, 640 |
| Fort Dix | 1 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 609, 640 |
| Tuckahoe | 1 | — | 609, 640 |
| Somers Point | 1 | — | 609, 640 |
FAQ
What is the biggest city in area code 640?
Atlantic City holds the most active prefixes (16), making it the code's largest numbering locality.
How many places does 640 cover?
35 rate centers in New Jersey hold active 640 prefixes, from Atlantic City down to communities with a single prefix.
Does a 640 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.