New Jersey Area Codes
Complete directory of all 10 active area codes serving New Jersey. The The Garden State has a population of 9,290,841 (2023 estimate) and uses 10 area codes.
About Area Codes in New Jersey
New Jersey (NJ) is the The Garden State, located in the Northeast region of the United States. With a 2023 population of 9,290,841 residents, New Jersey is served by 10 active area codes. The state capital is Trenton and the largest city is Newark.New Jersey's official motto is "Liberty and Prosperity."
Area code assignments in New Jersey follow the North American Numbering Plan (NANP), which has been in effect since 1947. As the state's population and demand for phone numbers grew — driven by the rise of cell phones, fax machines, pagers, and VoIP lines — regulators either split existing area codes geographically or added overlay codes that share the same territory. That's why New Jersey now has 10 codes: 201, 551, 609, 640, 732, 848, 856, 862, 908, 973.
When you receive a call from a New Jersey number, the area code tells you only where the number was originally assigned. Because of Local Number Portability (LNP), which took effect in 2003, callers can keep their phone numbers even when moving across state lines. So while a 201 number was once assigned in New Jersey, the person calling you could be anywhere in the US today.
Time zones in New Jersey
New Jersey observes the Eastern time zone. Daylight Saving Time is observed from the second Sunday in March through the first Sunday in November, when clocks shift forward by one hour. When you call a New Jersey number from outside the state, double-check the local time above each area code detail page to avoid calling at unreasonable hours.
Phone number format in New Jersey
All New Jersey phone numbers follow the standard 10-digit NANP format: (NPA) NXX-XXXX. For local calls within New Jersey, you typically need to dial the full 10-digit number — even for calls within the same area code — because of mandatory 10-digit dialing imposed by the FCC for areas with overlay codes (most of New Jersey's territory). For long-distance calls within the NANP, dial 1 + area code + 7-digit number.
Frequently asked questions about New Jersey area codes
How many area codes does New Jersey have?
New Jersey currently has 10 active area codes: 201, 551, 609, 640, 732, 848, 856, 862, 908, 973.
What is New Jersey's original area code?
The oldest area code(s) in New Jersey were assigned in 1947 as part of the original 86 NANP codes. These legacy codes typically covered the entire state at first, then were split as demand grew.
What time zone is New Jersey in?
New Jersey is in the Eastern time zone.
Will New Jersey get more area codes?
As New Jersey's population and number demand grow, NANPA may assign additional overlay codes. When the current codes run out of available prefixes, regulators announce public hearings and propose new codes. The AreaCodeCentral team tracks these announcements and updates the directory within 24 hours of any new code activation.