Home › Arizona › 520

520 Area Code

Area code 520 serves Tucson, Gilbert, Chandler, Tempe, Goodyear and nearby communities in Arizona. It has been in service since March 19, 1995, when it was split from 602.

StateArizona
Time zoneMountain
Local time now…
Prefixes in use696
Projected to run out2031 ⚠︎
TucsonGilbertChandlerTempeGoodyearSan Tan ValleyAvondaleQueen CreekMaricopaCasas AdobesCasa GrandeCatalina FoothillsSierra VistaDrexel HeightsFlorenceRio RicoEloyCoolidgeNogalesFlowing WellsDouglasVailTanque VerdeSierra Vista SoutheastSun LakesValencia WestTucson EstatesSaddlebrookeTucson MountainsTollesonCorona de TucsonArizona CityRincon ValleyBensonGuadalupeTucsonGilbertSan Tan ValleyCasas Adobes
Cities and towns served by area code 520

Who issues 520 numbers

Mobile 35%VoIP and cable 23%Landline 43%

Share of the 696 prefixes (the three digits after 520) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
Lumen (Qwest)201
Verizon Wireless104
T-Mobile84
AT&T Mobility53
Onvoy (Sinch)52
Lumen (Level 3)29
Verizon Business (MCImetro)26
Bandwidth17

Cities and towns in area code 520

CityPopulationOther area codes
Tucson548,371
Gilbert287,285
Chandler278,748
Tempe190,571
Goodyear125,359
San Tan Valley105,231
Avondale100,983
Queen Creek89,770
Maricopa78,362
Casas Adobes70,770
Casa Grande69,753
Catalina Foothills51,756
Sierra Vista44,907
Drexel Heights27,636
Florence25,222
Rio Rico21,798
Eloy19,967
Coolidge19,959
Nogales19,495
Flowing Wells16,989
Douglas16,038
Vail15,722
Tanque Verde15,531
Sierra Vista Southeast14,213
Sun Lakes14,079
Valencia West13,834
Tucson Estates12,687
Saddlebrooke12,616
Tucson Mountains11,428
Tolleson9,224
Corona de Tucson9,039
Arizona City8,681
Rincon Valley5,851
Benson5,532
Guadalupe5,093

Got a call from 520?

A 520 number was originally issued in Arizona, but that does not prove the caller is there. 23% of 520 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.

All 696 prefixes in area code 520

Format: (520) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.

Questions about area code 520

Where is area code 520?
Area code 520 is in Arizona. It covers Tucson, Gilbert, Chandler, Tempe, Goodyear, San Tan Valley and 29 more cities and towns.
What time zone is area code 520?
Area code 520 is in the Mountain time zone (Arizona does not observe daylight saving time).
Is 520 a toll-free number?
No. 520 is a geographic area code in Arizona. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
Will area code 520 run out of numbers?
NANPA's latest forecast projects area code 520 to exhaust in the third quarter of 2031. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in Arizona