Region
Northeast Area Codes
The most densely numbered part of the country. New York, New Jersey and the Boston corridor run heavy overlays to keep up with demand. The Northeast covers 9 states and 65 area codes.
Full breakdown
Northeast states & their codes
| State | Codes | Area codes |
|---|---|---|
| Connecticut | 4 | 203, 475, 860, 959 |
| Maine | 1 | 207 |
| Massachusetts | 9 | 339, 351, 413, 508, 617, 774, 781, 857, 978 |
| New Hampshire | 1 | 603 |
| New Jersey | 10 | 201, 551, 609, 640, 732, 848, 856, 862, 908, 973 |
| New York | 23 | 212, 315, 329, 332, 347, 363, 465, 516, 518, 585, 607, 624, 631, 646, 680, 716, 718, 838, 845, 914, 917, 929, 934 |
| Pennsylvania | 15 | 215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878 |
| Rhode Island | 1 | 401 |
| Vermont | 1 | 802 |
About area codes in the Northeast
The most densely numbered part of the country. New York, New Jersey and the Boston corridor run heavy overlays to keep up with demand. Across the region's 9 states, the directory tracks 65 active area codes. The heaviest concentrations are in New York, Pennsylvania, and New Jersey, where large metros run overlays to keep up with demand.
At the other end, 4 states in the region still get by on a single area code, where seven-digit local dialing may persist. For the rules behind these changes, see how area codes work and 10-digit dialing.
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