Area Code 520: Tucson, Arizona
520 is a telephone area code serving Arizona, including Tucson. It is part of the North American Numbering Plan and is dialed with the country code +1.
Numbers beginning with 520 are located in Arizona, United States (NANP region: South). The code covers Tucson.
How to Dial Area Code 520
| Calling from | What to dial |
|---|---|
| Anywhere in the US or Canada | 1 520 XXX-XXXX (10-digit dialing: 520 + 7-digit number) |
| Local call inside the same area code | 7-digit number in most areas; 10 digits where an overlay code is active |
| From the UK or Europe | 00 1 520 XXX XXXX |
| From Australia | 0011 1 520 XXX XXXX |
| From a mobile phone anywhere | +1 520 XXX XXXX |
Whatever country you are calling from, the + symbol replaces the exit code. Save the contact as +1 520 XXXXXXX and it will dial correctly from any phone in the world.
Time Zone for Area Code 520
Calls to a 520 number ring in the America/Phoenix time zone, standard offset UTC-07:00. This zone does not observe daylight saving time, so the offset above holds all year.
Note: Arizona does not observe daylight saving time, so it stays on UTC-07:00 all year, matching Pacific daylight time in summer.
Cities and Communities Served by 520
The following places fall inside the 520 calling area:
Other Area Codes in Arizona
These codes also serve Arizona. Area codes are assigned by the North American Numbering Plan Administration (NANPA).
| Area Code | Cities / Coverage |
|---|---|
| 480 | Phoenix East Valley, Scottsdale |
| 602 | Phoenix |
| 623 | Phoenix West Valley |
| 928 | Flagstaff, Yuma |
See all 5 area codes in Arizona →
Frequently Asked Questions
Where is area code 520?
Area code 520 is in Arizona, United States. It covers Tucson.
What time zone is area code 520 in?
Area code 520 rings in the America/Phoenix time zone (UTC-07:00 standard).
Do I need to dial 1 before area code 520?
Yes, for a long-distance call inside the US and Canada you dial 1 first, then 520, then the seven-digit number. The 1 is the North American long-distance trunk prefix — it is not the country code. From outside North America you dial your exit code then 1 then 520.
Is area code 520 toll-free?
No. 520 is a standard geographic area code, so normal long-distance rates apply unless your plan includes them. Toll-free NANP codes are 800, 833, 844, 855, 866, 877 and 888.