Question 1

Where is area code 520?

Accepted Answer

Area code 520 covers Tucson and nearby cities including Casa Grande, Sierra Vista, Oro Valley in Arizona, in the Mountain Time (Arizona, no DST).

Question 2

What cities use area code 520?

Accepted Answer

Area code 520 serves Tucson, Casa Grande, Sierra Vista, Oro Valley, Catalina Foothills, and 2 other communities in Arizona.

Question 3

What time zone is area code 520 in?

Accepted Answer

Area code 520 is in the Mountain Time (Arizona, no DST) (America/Phoenix).

Question 4

How do you dial a 520 number?

Accepted Answer

Dial all 10 digits: 520 followed by the 7-digit local number. From abroad, dial +1 520 and the local number.

Question 5

Is a call from area code 520 a scam?

Accepted Answer

A 520 number is geographically tied to Arizona, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Question 6

Is 520 a country code?

Accepted Answer

No. 520 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 520 number written for international dialing looks like +1 520 followed by the 7-digit local number.

Area Code 520

Cities in area code 520

Area codes by city

Carriers in area code 520

Other Arizona area codes

Nearby area codes