520 Area Code — Tucson, AZ
Area code 520 serves Tucson and 3 other cities in Arizona. Local time follows America/Phoenix. It has no overlay codes.
- State
- Arizona
- Primary city
- Tucson
- Timezone
- America/Phoenix
- In service since
- 1995
- Type
- Geographic
- Overlay codes
- None
Cities Served by 520
The 520 area code covers 4 cities and communities in Arizona.
- Tucson
- Sierra Vista
- Casa Grande
- Yuma
About Area Code 520
Area code 520 is a North American Numbering Plan (NANP) area code that has been in service since 1995. It is administered by NANPA on behalf of the FCC and serves the Arizona region anchored on Tucson.
520 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 520 line.
Mobile numbers in 520 are portable: a person who moved away from Tucson may still carry a 520 mobile number on their device. If you receive an unexpected call from a 520 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.
520 Area Code FAQ
Where is area code 520?
Area code 520 is located in Arizona, primarily serving Tucson and surrounding cities including Sierra Vista, Casa Grande, Yuma. The region operates on AZ (America/Phoenix) time.
What state is 520 area code?
520 is a Arizona area code. It was put into service in 1995 and has no overlay codes — it covers its geographic area exclusively.
Is 520 a scam area code?
520 is a legitimate North American area code allocated by NANPA to Arizona. Like any geographic area code, scammers sometimes spoof 520 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 520 use?
Area code 520 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 520 phone number?
Yes. Use the reverse lookup widget above to enter a full 520 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.