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Area code 279

Area code 279 Sacramento, California

Area code 279 is one of the newer area codes, added in 2018 to California, with numbers assigned in Sacramento, Folsom, Roseville and 7 more places. It’s 9:12 PM there now.

State
California41 area codes in California
Time zone
Pacific9:12 PM there now
Exchanges
15010 places
Overlay
916Same area, 10-digit dialing
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Where area code 279 is

Numbers in 279 are assigned to 10 places in 2 counties: Sacramento County and Placer County.

Sacramento has the most, 47% of the exchanges; the rest are spread across 9 other places.

  • Sacramento71
  • Folsom16
  • Roseville16
  • Elk Grove12
  • Fair Oaks7
  • Lincoln5
  • Rio Linda4
  • Courtland2
  • Walnut Grove2
  • Isleton1

Phone companies in 279

150 blocks of numbers in 279 are held by 24 phone companies. The most belong to Inteliquent (37), Fractel (36) and T-Mobile (19).

A large share, about 75%, belongs to competitive and internet phone carriers; wireless networks hold 23% and local phone and cable companies 1%.

A block’s holder is the company it was first assigned to; numbers can move to other carriers since.

History and overlays

279 went into service in 2018, added to the area of 916.

916 (since 1947) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

107 new exchanges were assigned since 2021, the latest in October 2026.

Calling 279

It’s 9:12 PM Pacific time in 279 right now.

From elsewhere in the U.S., dial 1, 279 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

California has 41 area codes: 209, 213, 279, 310, 323, 341, 350, 357, 369, 408, 415, 424, 442, 510, 530, 559, 562, 619, 626, 628, 650, 657, 661, 669, 707, 714, 738, 747, 760, 805, 818, 820, 831, 837, 840, 858, 909, 916, 925, 949 and 951.

From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.

Map of the 279 area code

Map of the 279 area code around Sacramento, Folsom and Roseville, California.

Interactive map © OpenStreetMap contributors

Cities on the map

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Questions about 279

Where is area code 279?

In California, covering Sacramento, Folsom and Roseville and other places across 2 counties.

What time zone is 279 in?

Pacific time. It was 9:12 PM there when this page loaded.

Is 279 an overlay?

Yes. 916 serves the same area, so dial all 10 digits for local calls.

Which phone companies have 279 numbers?

24 companies hold blocks; the most belong to Inteliquent, Fractel and T-Mobile. About 23% of blocks are wireless.

Is 279 running out of numbers?

Not on record. 107 new exchanges have been assigned since 2021.