Area code 520 is in southern Arizona, centered on Tucson and surrounding communities like Sierra Vista and Nogales.

Quick Scoop: Where is area code 520?

  • State: Arizona (primarily the southern and southeastern part of the state).
  • Main city: Tucson is the largest and best‑known city in the 520 area code.
  • Other notable areas: Includes communities such as Sierra Vista, Nogales, Casa Grande, Green Valley, and many smaller southern Arizona towns.
  • Time zone: Mountain Time, generally UTC‑7 (no daylight saving, like most of Arizona).

If you’re getting a call from a 520 number, it’s almost certainly coming from southern Arizona, with Tucson as the main hub.

TL;DR: Area code 520 = southern Arizona, especially Tucson and nearby cities.

Information gathered from public forums or data available on the internet and portrayed here.