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US area codes

New Jersey area codes

A checked list of 10 in-service geographic area codes in New Jersey, with their dates, overlay partners and dialing rules.

Last checked 14 October 2026

Area codes across North America

Codes in service in New Jersey

New Jersey has 10 geographic area codes in service: 201, 551, 609, 640, 732, 848, 856, 862, 908, 973. 201 is the oldest, dated 1947, and 640 the newest, dated 17 Sep 2018.1 All of New Jersey's codes are on Eastern time.

Area codeNANPA locationNPA in-service dateIn-service overlay peersTime zoneLocal calls within the code
201NJ1947551Eastern10 digits
551NJ29 Dec 2001201Eastern10 digits
609NJ1957640Eastern10 digits
640NJ17 Sep 2018609Eastern10 digits
732NJ1 Jun 1997848Eastern10 digits
848NJ29 Dec 2001732Eastern10 digits
856NJ12 Jun 1999None listedEastern10 digits
862NJ29 Dec 2001973Eastern10 digits
908NJ1 Nov 1990None listedEastern10 digits
973NJ1 Jun 1997862Eastern10 digits

Scroll the table sideways to see every column. Sources: NANPA (14 October 2026 file).

History and overlays in New Jersey

  • Before 1960: 201 (1947), 609 (1957)
  • 1990s: 908 (1 Nov 1990), 732 (1 Jun 1997), 973 (1 Jun 1997), 856 (12 Jun 1999)
  • 2000s: 551 (29 Dec 2001), 848 (29 Dec 2001), 862 (29 Dec 2001)
  • 2010s: 640 (17 Sep 2018)

New Jersey's in-service overlay groups are 201/551; 609/640; 732/848; 862/973.1

  • 609/640: 609 (1957) was joined by 640 on 17 Sep 2018.
  • 201/551: 201 (1947) was joined by 551 on 29 Dec 2001.
  • 732/848: 732 (1997) was joined by 848 on 29 Dec 2001.
  • 862/973: 973 (1997) was joined by 862 on 29 Dec 2001.

Dialing in New Jersey

Local calls within a single area code in New Jersey (201, 551, 609, 640, 732, 848, 856, 862, 908, 973) are all recorded as 10 digits. From any of New Jersey's codes, local calls to another area code are all recorded as 1 + 10 digits.1

Neighbours of New Jersey

Regions that border New Jersey:

Rules that apply to every region are on the area-code reference.

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Further reading

Longer research pieces on this topic, each with its own source list and a downloadable PDF.

Sources

Every regulatory and pricing claim on this page links to the primary source it came from. Figures were checked on the date shown at the top of the page; rules and prices change, so verify before relying on one.

  1. NANPA, NPA Database CSV, file dated 14 October 2026; US geographic codes, location, dates, overlay complexes, dialing plan and time zone. Retrieved 14 Oct 2026
    https://reports.nanpa.com/public/npa_report.csv