Northeast region · Eastern Time
New Jersey Area Codes
All 10 area codes serving New Jersey, the cities each one covers, and which are overlays. New Jersey is served by 10 area codes in the Eastern Time zone.
Last updated October 3, 2026
Full list
Every New Jersey area code
New Jersey is served by 10 area codes in the Eastern Time zone. 4 of these are overlay codes layered over busy metros; the rest are geographic codes.
| Code | Area served | Type | In service |
|---|---|---|---|
| 201 | Northeastern New Jersey: Hudson County and most of Bergen County | Geographic | Since 1947 |
| 551 | Northeastern New Jersey: Hudson County and most of Bergen County | Overlay | Since 2001 |
| 609 | Central and southern New Jersey: Trenton, Princeton, Atlantic City and the Jersey Shore south | Geographic | Since 1957 |
| 640 | Central and southern New Jersey: Trenton, Princeton, Atlantic City and the Jersey Shore south | Overlay | Since 2018 |
| 732 | Central New Jersey: Middlesex, Monmouth and northern Ocean counties | Geographic | Since 1997 |
| 848 | Central New Jersey: Middlesex, Monmouth and northern Ocean counties | Overlay | Since 2001 |
| 856 | Southwestern New Jersey, including Camden, Cherry Hill and Vineland | Geographic | Since 1999 |
| 862 | Northern New Jersey: Essex, Passaic, Morris and Sussex counties | Overlay | Since 2001 |
| 908 | North-central and western New Jersey: Union, Somerset, Hunterdon and Warren counties | Geographic | Since 1990 |
| 973 | Northern New Jersey: Essex, Passaic, Morris and Sussex counties | Geographic | Since 1997 |
Area codes and dialing in New Jersey
New Jersey's 10 area codes mix older geographic codes with newer overlays. The busiest metros — around Jersey City, Trenton, Elizabeth — carry the most numbers and rely on overlays, which is why 10-digit dialing is required there. Quieter parts of the state may still use a single code. The oldest code in New Jersey is 201 (Jersey City), one of the original 1947 area codes.
Whenever a New Jersey region runs low on numbers, a new overlay is added on top rather than splitting the map, so existing customers keep their numbers. See 10-digit dialing for what that means in practice, or the newest area codes for upcoming changes.
New Jersey city area code pages
Look up the area codes for a specific New Jersey city: Jersey City · Newark · Toms River · Trenton · Paterson.
Browse New Jersey another way
Explore by Northeast region, by time zone, or jump to the city index. You can also see the complete numeric list of every US area code.
Quick answers
New Jersey area code FAQ
How many area codes does New Jersey have?
New Jersey currently has 10 area codes: 201, 551, 609, 640, 732, 848, 856, 862, 908, 973.
What is the main area code for New Jersey?
New Jersey has no single main code. Its original 1947 area code was 201; today the main cities are served by 201 (Jersey City), 609 (Trenton), 908 (Elizabeth), 732 (Toms River), 973 (Newark).
Does New Jersey require 10-digit dialing?
Yes, in its overlay areas you must dial all 10 digits, even for local calls. Dialing all 10 digits always works, so it is the safe habit.