Area Code 520 at a Glance
| Area code | 520 |
| Region | Arizona |
| Country | United States |
| Primary timezone | America/Phoenix |
| Dialing format | +1 (520) NXX-XXXX |
Cities and Places Using Area Code 520
Based on prefix-level carrier data, area code 520 covers places including:
- Tucson, AZ
- Sierra Vista, AZ
- Casa Grande, AZ
- Nogales, AZ
- Green Valley, AZ
- Douglas, AZ
- Benson, AZ
- Pearce, AZ
- Oracle, AZ
- Sonoita, AZ
- Bisbee, AZ
- Willcox, AZ
Frequently Asked Questions
Where is area code 520?
Area code 520 serves Arizona, United States.
Who is calling me from area code 520?
A call from area code 520 most likely originates from Arizona, but caller ID can be spoofed. If an unknown caller asks for personal or payment information, hang up and call the organization back on its official number.
How do I dial a 520 number?
Within North America: dial 1-520 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 520 and the number.