520 area code: Tucson, time zone and cities
Area code 520 covers Tucson and most of southeastern Arizona. It was split from area code 602 in 1995.
Quick facts
- Location
- Tucson and southeastern Arizona
- State
- Arizona
- Time zone
- Mountain Standard TimeLocal time now:
- Overlay
- No. 520 is the only area code for its area.
- In service since
- 1995
Arizona stays on Mountain Standard Time all year and does not use daylight saving time. The one exception is the Navajo Nation, which is in the 928 area, not 520.
Cities and places in area code 520
- Ajo
- Amado
- Arivaca
- Arizona City
- Bapchule
- Benson
- Bisbee
- Bowie
- Casa Grande
- Catalina
- Cochise
- Coolidge
- Cortaro
- Douglas
- Dragoon
- Elfrida
- Elgin
- Eloy
- Florence
- Fort Huachuca
- Green Valley
- Hereford
- Huachuca City
- Kearny
- Lukeville
- Mammoth
- Marana
- Maricopa
- McNeal
- Mount Lemmon
- Naco
- Nogales
- Oracle
- Oro Valley
- Patagonia
- Pearce
- Picacho
- Pirtleville
- Pomerene
- Red Rock
- Rillito
- Rio Rico
- Sacaton
- Sahuarita
- Saint David
- San Manuel
- San Simon
- Sasabe
- Sells
- Sierra Vista
- Sonoita
- Stanfield
- Superior
- Tombstone
- Topawa
- Tubac
- Tucson
- Tumacacori
- Vail
- Valley Farms
- Willcox
Counties
- Cochise County
- Maricopa County
- Pima County
- Pinal County
- Santa Cruz County
Area codes that share or border 520
520 has no overlay. It is the only area code for its area.
Nearby
- 480 AZ
- 575 NM
- 602 AZ
- 623 AZ
- 928 AZ
Is a call from 520 a scam?
The area code alone says nothing about the caller. It shows where the number was set up. It does not show who is calling or where they are. The FTC says scammers can make any name or number show up on caller ID. This is called spoofing, and it can make a call look local when it comes from anywhere in the world.
Signs of a phone scam, from the FTC:
- The caller says you won a prize, but you have to pay to get it.
- The caller says you will be arrested or fined unless you pay right away. Real law enforcement and federal agencies do not call and threaten you.
- The caller insists you pay by gift card, wire transfer, cryptocurrency or a payment app.
- The caller says they are from a government agency and asks for your Social Security number.
What to do:
- If you get a robocall, hang up. Do not press any number, which could lead to more robocalls.
- Ask your phone carrier what call blocking it offers.
- Report unwanted calls at DoNotCall.gov. If you lost money, report it at ReportFraud.ftc.gov.
How to get a 520 phone number
For an AI agent or a business
Our API lines are real T-Mobile mobile numbers for texts, or for texts and calls over SIP, rented by the month. Add "area_code": "520" to an order to ask for 520 numbers.
The area code is a request and is not guaranteed. Numbers come from our stock and from the carrier, so some can have another area code. If the carrier cannot fill the request within about an hour, we send numbers from other area codes.
Numbers for AI agents and businesses
For your own phone
Our T-Mobile Talk & Text line asks where your number should come from at checkout. If you live in the 520 area, give your address, and we ask the carrier for a number local to your ZIP code. The carrier picks the area code, so a 520 number is not guaranteed.
Our Unlimited line has no area code choice.
Questions about area code 520
Where is area code 520?
Area code 520 covers Tucson and most of southeastern Arizona. It was split from area code 602 in 1995.
What time zone is area code 520 in?
Mountain Standard Time. Arizona stays on Mountain Standard Time all year and does not use daylight saving time. The one exception is the Navajo Nation, which is in the 928 area, not 520.
Does area code 520 have an overlay?
No. 520 is the only area code for its area.
When did area code 520 start?
NANPA lists 520 as in service since 1995.
Is a call from area code 520 a scam?
The area code alone does not make a call a scam. It shows where the number was set up. The FTC says scammers can make any number show up on caller ID. If you get a robocall, hang up without pressing any number, and report unwanted calls at DoNotCall.gov.
How can I get a phone number with area code 520?
For an AI agent or a business, add "area_code": "520" to an API order. For your phone, if you live in the 520 area, give your address at checkout for our T-Mobile Talk & Text line and we ask the carrier for a number local to your ZIP code. Either way the area code is a request and is not guaranteed.
Sources: NANPA area code database, file of November 3, 2026 (state, time zone, overlays, year in service); Wikipedia, "Area code 520", revision of February 27, 2026 (area, places and neighbors); Wikipedia, "Time in Arizona" (daylight saving time); FTC, "Phone Scams" and "How To Block Unwanted Calls" (call advice). Checked November 3, 2026.