Pima County · Arizona
Tucson, AZ area codes and time zone
Quick answer
Tucson is served by area code 520, keeps MST time (GMT-7), and sits in county FIPS 04019.
- Area code
- 520Within 25 miles of the city centre
- Time zone
- MSTAmerica/Phoenix
- UTC offset
- GMT-7No DST change
- County FIPS
- 04019Pima County
Dialling from and to Tucson
What this means when you pick up the phone.
Local calls inside 520 may still work on seven digits, but ten-digit dialling is the safe default everywhere in the country now. From abroad, dial +1 then the ten digits.
How Tucson came to have one area code
Why one city can carry several codes.
Area codes are assigned to geography, then exhausted as demand grows. Tucson — population about 543k — is covered by code 520, drawn from within 25 miles of the city centre. A single code still has enough numbers for the area, so no overlay has been needed yet. When growth exhausts it, regulators will layer on a new code and local calls will move to ten digits.
More Tucson data
Other Tucson datasets on this site.
- Tucson population and income
- Tucson sales tax rate
- Tucson property tax
- Tucson cost of living
- Tucson home values and rent
- Tucson crime rates
- Tucson public schools
- Tucson weather normals
- Tucson commute times
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