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Area code 323

Area code 323 Los Angeles, California

Area code 323 is in California, with numbers assigned in Los Angeles, Montebello. It’s 9:12 PM there now.

State
California41 area codes in California
Time zone
Pacific9:12 PM there now
Exchanges
7862 places
Overlay
213 and 738Same area, 10-digit dialing
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Where area code 323 is

Numbers in 323 are assigned to 2 places in 1 county: Los Angeles County.

Los Angeles holds most of them: 86% of the exchanges.

  • Los Angeles676
  • Montebello110

Phone companies in 323

786 blocks of numbers in 323 are held by 27 phone companies. The most belong to AT&T (265), T-Mobile (149) and Verizon Business (52).

A mix: about 30% wireless, 34% local phone and cable and 36% other carriers, including internet phone services.

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

History and overlays

323 went into service in 1998, added to the area of 213.

213 (since 1947) and 738 (since 2024) share the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

4 new exchanges were assigned since 2021, the latest in April 2025.

Calling 323

It’s 9:12 PM Pacific time in 323 right now.

From elsewhere in the U.S., dial 1, 323 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 323 area code

Map of the 323 area code around Los Angeles and Montebello, California.

Interactive map © OpenStreetMap contributors

Cities on the map

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Questions about 323

Where is area code 323?

In California, covering Los Angeles and Montebello across 1 county.

What time zone is 323 in?

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

Is 323 an overlay?

Yes. 213 and 738 serve the same area, so dial all 10 digits for local calls.

Which phone companies have 323 numbers?

27 companies hold blocks; the most belong to AT&T, T-Mobile and Verizon Business. About 30% of blocks are wireless.

Is 323 running out of numbers?

Not on record. 4 new exchanges have been assigned since 2021.