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Where is the 520 Area Code?
Area code 520 serves Tucson, AZ, and the surrounding areas. The major cities within this area code are Tucson, Nogales, Fort Huachuca, Casas Adobes, Catalina Foothills, and Casa Grande. Tucson is the second-largest city in Arizona, with a population of 546,574 (2022). It covers four counties, including Pima, Pinal, Cochise, and Santa Cruz. The 520 area code was created from a split of the 602 area code and today works alongside the 945 overlay to fulfil the number requirement. This overlay allows new numbers to be added easily without affecting existing 520 numbers.

Time Zone
The 520 area code, covering Tucson and southern Arizona, is in the Mountain Standard Time (MST) zone, which is UTC-7 and GMT-7. Unlike most parts of the U.S., this region does not observe Daylight Saving Time, so the time stays the same all year round.
History of 520 Area Code
The 520 area code was created on March 19, 1995, when it split from Arizona's original 602 area code to meet the growing demand for phone numbers. After a second split on June 23, 2001, which formed the 928 area code, 520 was left covering southeastern Arizona, including Tucson, Nogales, and Casa Grande, along with surrounding communities. Today, it continues to serve this region, connecting both the city and nearby towns under a single, well-established area code.
Get a 520 Area Code with Callio to Grow Your Business in Tucson, AZ
Explore a wide range of virtual phone numbers with a 520 dialing code on Calilio. Select one to encourage community engagement and establish a strong base for your enterprise in Tucson.
Some Numbers May Require Proof Of ID And Address Registration According To Local Laws.
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Exploring 520 Area Code: Business Scenario and Outlook
Tucson, the key city in the 520 region, is a hub for many businesses, from small-scale to large-scale. Here, you can find diverse enterprises such as technology startups, manufacturing cooperations, healthcare providers, and educational institutions.
The top employers in Tucson include The University of Arizona, Raytheon,
United States Air Force, Tucson Unified School District (Tusd1. Org), Banner Health, Pima County, Pima Community College, Raytheon Missile Systems, and Tucson Medical Center.
Tucson provides various opportunities if you plan to operate a business in this area. So, selecting Tuscon’s area code can be an excellent choice if you’re looking to expand your business in the US.

Nearby 520 Area Codes
Popular Cities | Area Codes |
| Phoenix, AZ | 480, 602, 623 |
| Tucson, AZ | 520 |
| Las Cruces, NM | 575 |
| Yuma, AZ | 928 |
Features of Virtual 520 Area Code Numbers
How to Get a Virtual Phone Number with Area Code 520?
Secure your 520 business number with Calilio at an affordable price and plans. Here are the simple steps to follow:
- Visit Calilio’s website and sign up using your details and email.
- Look into all its features, plans, and the services you require. Choose your plan.
- Delve into the list of available numbers, and choose one that suits your company’s requirements and needs.
- Complete the payment process for your number. Follow the prompt instructions to check out.
- Personalize your settings once your number activates.
Already Have a Local Phone Number with a Tuscon Area Code?
If you already have a 520 number and want to transfer it to VoIP, Calilio is a great strategic choice. We offer a simple process to upgrade to an advanced business communication solution without changing your existing phone number.

Benefits of a 520 Number for Businesses
Area code 520 offers significant benefits for businesses connecting with the Tuscon market, providing practical and strategic advantages.
Local Identity
Deduct Long Distance Charge
Local SEO Ranking
Customer Convenience
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Frequently Asked Questions
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