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Area code 623

Area code 623 Phoenix, Arizona

Area code 623 is in Arizona, with numbers assigned in Phoenix. It’s 10:08 PM there now.

State
Arizona5 area codes in Arizona
Time zone
Mountain (no daylight saving)10:08 PM there now
Exchanges
3141 place
Overlay
480 and 602Same area, 10-digit dialing
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Where area code 623 is

Numbers in 623 are assigned to 1 place in 1 county: Maricopa County.

Phoenix holds most of them: 100% of the exchanges.

  • Phoenix314

Phone companies in 623

314 blocks of numbers in 623 are held by 26 phone companies. The most belong to Lumen (CenturyLink) (99), T-Mobile (47) and Verizon Wireless (31).

A mix: about 32% wireless, 37% local phone and cable and 31% 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

623 went into service in 1999, added to the area of 602.

480 (since 1999) and 602 (since 1947) share the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

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

Calling 623

It’s 10:08 PM Mountain (no daylight saving) time in 623 right now; Arizona doesn’t change its clocks for daylight saving time.

From elsewhere in the U.S., dial 1, 623 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

Arizona has 5 area codes: 480, 520, 602, 623 and 928.

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 623 area code

Map of the 623 area code around Phoenix, Arizona.

Interactive map © OpenStreetMap contributors

Cities on the map

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Questions about 623

Where is area code 623?

In Arizona, covering Phoenix across 1 county.

What time zone is 623 in?

Mountain (no daylight saving) time. It was 10:08 PM there when this page loaded.

Is 623 an overlay?

Yes. 480 and 602 serve the same area, so dial all 10 digits for local calls.

Which phone companies have 623 numbers?

26 companies hold blocks; the most belong to Lumen (CenturyLink), T-Mobile and Verizon Wireless. About 32% of blocks are wireless.

Is 623 running out of numbers?

Not on record. 41 new exchanges have been assigned since 2021.