520 Area Code
Covers Tucson and nearby communities in Arizona.
(520) 555-0142Area code 520 map
Interactive coverage map for area code 520, centered on Tucson, Arizona
32.2217, -110.9265
Open in OpenStreetMapArea code 520 coverage map — centered on Tucson. Shaded area shows the approximate reach around the primary city.
520 is the area code for Tucson and the surrounding part of Arizona. It reaches roughly 663,000 people across places such as Tucson, Casa Grande, Sierra Vista, Oro Valley and more. The region observes Mountain time, so a number like (520) 555-0142 is on that clock right now. On the ground it spans Pima, Pinal, Cochise and nearby counties. It is not currently paired with an overlay code. Local calls inside the 520 area can generally be placed with ten digits, and you do not need a leading 1 for domestic calls. Keep reading for the current local time in Tucson, a map of the 520 coverage area, the places it reaches, nearby and overlay codes, and how to tell a real 520 call from a scam.
Cities covered by 520
Cities & neighborhoods
- Tucson
- Casa Grande
- Sierra Vista
- Oro Valley
- Catalina Foothills
- Drexel Heights
- Nogales
Nearby & overlay area codes
Overlay codes (same area)
These share 520’s geography — a number in either code can be on the same street.
520 has no overlay code right now.
Neighboring codes
Codes for adjacent regions and metros.
Is a call from 520 a scam?
Area code 520 serves Tucson and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 520 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 520 number from abroad
Every 520 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 520 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 520 555-0142 - Australia
0011 1 520 555-0142 - Japan
010 1 520 555-0142 - Mexico
00 1 520 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 520 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 520: frequently asked questions
Where is the 520 area code located?
The 520 area code is located in Arizona, centered on Tucson. It covers Pima, Pinal, Cochise, Santa Cruz and nearby communities including Tucson, Casa Grande, Sierra Vista, Oro Valley, Catalina Foothills, Drexel Heights.
What time zone is 520 in?
Area code 520 is in the Mountain time zone (UTC-7 (MST)). You can see the exact current local time for Tucson on the live clock above.
What cities use area code 520?
Cities and areas that use 520 include Tucson, Casa Grande, Sierra Vista, Oro Valley, Catalina Foothills, Drexel Heights. Its primary city is Tucson, AZ.
Do I need to dial 1 before 520?
You generally do not need to dial a leading 1 for domestic calls to 520. Ten-digit dialing (the 520 code plus the seven-digit number) is the safest habit.
Is 520 a toll-free or scam number?
No — 520 is a normal geographic area code for Tucson, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 520 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 520?
Area code 520 does not currently have an overlay code; it is not layered on top of another code in the same area.