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US area code · Arizona

Area code 623

Where the 623 area code is, its overlay and how to dial a +1 623 number from anywhere.

CoversAvondale, ArizonaTime zoneMountain (MT)TypeOverlay
Quick answer

The 623 area code is in Avondale, Arizona, United States (Mountain (MT)). To call from abroad: +1 623 555-0123. It is an overlay, so all 10 digits are dialled.

StateArizona
Main areaAvondale
Time zoneMountain (MT)
TypeOverlay
10-digit dialingRequired
In service since11-Jan-1999

The 623 area code is a geographic North American Numbering Plan (NANP) code covering Avondale, Arizona. It has been in service since 11-Jan-1999 and sits in the Mountain (MT) time zone.

Overlay 623 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

623480602

How to dial a 623 number

From abroad+1 623 555-0123
Within the US / Canada1 623 555-0123
Locally (same area)623 555-0123

Cities in the 623 area code

A 623 number is usually in one of these places in Arizona — 1 county.

Avondale MaricopaGlendale MaricopaPeoria MaricopaSun City West MaricopaSurprise Maricopa

Other Arizona area codes

480520602928

Frequently asked questions

Where is the 623 area code?

The 623 area code is in Avondale, Arizona, United States (Mountain (MT)).

Is 623 an overlay area code?

Yes. 623 overlays the same region as 480, 602, so callers dial all 10 digits.

Do I have to dial 10 digits for 623?

Yes — dial the area code plus the seven-digit number.

How do I call a 623 number from another country?

Dial your exit code (or +), then 1, then 623, then the number: +1 623 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 623 number does not pinpoint a street or ZIP code.

Missed a call from +1 623?

In the 30 days to September 24, 2026, 690 unwanted calls showing a 623 number were reported to the US Federal Trade Commission, 69% of them recorded messages or robocalls. That puts 623 at #108 of 670 area codes reported.

Other250
Medical & prescriptions210
Calls pretending to be government, businesses, or family and friends74
Dropped call or no message42
Before you call back
  • If you do not know anyone in Arizona, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 623 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 623 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 623:

Qwest Corporation 97T-Mobile USA, Inc. 39Cellco Partnership Dba Verizon Wireless 31Onvoy, LLC 29New Cingular Wireless PCS, LLC 22Mcimetro Access Transmission Services LLC 13

About 28.2% of the 326 prefixes in use belong to mobile carriers: a 623 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 623 — cities & rate centres