Sierra Vista, Arizona
Mountain Time Zone (UTC-7) · AZ · —
About Area Codes in Sierra Vista, Arizona
Sierra Vista, Arizona is served by 2 area codes: 520, 928. When multiple area codes serve the same geographic area, it typically indicates overlay codes have been added to accommodate growing demand for phone numbers. All local calls within Sierra Vista require 10-digit dialing. The city is in the Mountain time zone (UTC-7).
Other cities in area code 520
Frequently Asked Questions
What area code is Sierra Vista, Arizona?
Sierra Vista, Arizona uses area codes 520 and 928.
What time zone is Sierra Vista in?
Sierra Vista is in the Mountain time zone (UTC-7).
Do I need to dial 10 digits when calling Sierra Vista?
Yes, all local calls in Sierra Vista require 10-digit dialing because the area is served by multiple overlay area codes.
When was area code 520 created?
Area code 520 was established in 1995 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 520 with Sierra Vista?
Other cities sharing area code 520 with Sierra Vista include Catalina Foothills, Douglas, Green Valley, Marana, Nogales, among others.
Sierra Vista, AZ · Mountain Time Zone