623 Area Code — Glendale, AZ
Area code 623 serves Glendale and 4 other cities in Arizona. Local time follows America/Phoenix. It has no overlay codes.
- State
- Arizona
- Primary city
- Glendale
- Timezone
- America/Phoenix
- In service since
- 1999
- Type
- Geographic
- Overlay codes
- None
Cities Served by 623
The 623 area code covers 5 cities and communities in Arizona.
- Glendale
- Peoria
- Surprise
- Goodyear
- Avondale
About Area Code 623
Area code 623 is a North American Numbering Plan (NANP) area code that has been in service since 1999. It is administered by NANPA on behalf of the FCC and serves the Arizona region anchored on Glendale.
623 is currently a single-coverage geographic area code with no overlays. This means a 7-digit number in this area code is unique within its rate centers, though best-practice is always to dial the full 10-digit number when contacting a 623 line.
Mobile numbers in 623 are portable: a person who moved away from Glendale may still carry a 623 mobile number on their device. If you receive an unexpected call from a 623 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Arizona, you may also interact with neighbouring or overlay codes. See the related codes section below to explore the rest of Arizona.
Other Arizona Area Codes
Continue exploring the Arizona numbering plan.
623 Area Code FAQ
Where is area code 623?
Area code 623 is located in Arizona, primarily serving Glendale and surrounding cities including Peoria, Surprise, Goodyear. The region operates on AZ (America/Phoenix) time.
What state is 623 area code?
623 is a Arizona area code. It was put into service in 1999 and has no overlay codes — it covers its geographic area exclusively.
Is 623 a scam area code?
623 is a legitimate North American area code allocated by NANPA to Arizona. Like any geographic area code, scammers sometimes spoof 623 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 623 use?
Area code 623 operates on AZ (America/Phoenix). Numbers in this area code follow standard Arizona time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 623 phone number?
Yes. Use the reverse lookup widget above to enter a full 623 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.