| General Information about Area Code 520 | |
|---|---|
| Country | United States |
| State / Province / Territory | Arizona |
| Major City | Tucson |
| Time Zone | Mountain (UTC-07:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 520-320 | Tucson | Pima | Landline |
| 520-230 | Tucson | Pima | Wireless |
| 520-297 | Tucson | Pima | Landline |
| 520-533 | Sierra Vista | Cochise | Landline |
| 520-252 | Phoenix | Maricopa | Wireless |
| 520-270 | Tucson | Pima | Wireless |
| 520-324 | Tucson | Pima | Landline |
| 520-805 | Douglas | Cochise | Landline |
| 520-433 | Tucson | Pima | Landline |
| 520-221 | Benson | Cochise | Wireless |
| 520-266 | Sierra Vista | Cochise | Wireless |
| 520-228 | Tucson | Pima | Landline |
| 520-377 | Rio Rico | Santa Cruz | Landline |
| 520-780 | Tucson | Pima | Wireless |
| 520-384 | Willcox | Cochise | Landline |
| 520-703 | Tucson | Pima | Wireless |
| 520-648 | Green Valley | Pima | Landline |
| 520-573 | Tucson | Pima | Landline |
| 520-450 | Casa Grande | Pinal | Wireless |
| 520-442 | Tucson | Pima | Landline |