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Home >> State of Arizona >> Pima County  

Welcome to Pima County ...

Time Zone: Pima County lies in the Mountain Standard Time Zone (MST) and does not observe daylight saving time.

The community of Tucson is the Seat for Pima County.

Pima County is one of the original counties of Arizona and was founded in 1864.

From the Census Estimates for 2019, <1> Pima had a population of 1,047,279 people. This is an increase of 6.69% since the last Census (which gave a population of 981,620 people in 2010).

At the time of the 2010 Census, Pima represented 15.36% of the total population of Arizona.

Below are some of the communities located in Pima County:

  • Marana
    (19 miles [30.6 km] to the northwest)
    • Jump to our Gazetteer entry for Marana
    • Marana is located in Pima County (AZ)
    • Population from the 2020 Census: 51,306 people
    • Jump to TripAdvisor's Tourism page for Marana <2>
  • Oro Valley
    (16 miles [25.7 km] to the northeast)
  • Sahuarita
    (18 miles [29 km] to the south)
  • South Tucson
    (7 miles [11.3 km] to the east)
    • Jump to our Gazetteer entry for South Tucson
    • South Tucson is located in Pima County (AZ)
    • Population from the 2020 Census: 5,742 people
  • Tucson
    (9 miles [14.5 km] to the east)
    • Jump to our Gazetteer entry for Tucson
    • Tucson is located in Pima County (AZ)
    • Population from the 2020 Census: 553,571 people
    • Jump to TripAdvisor's Tourism page for Tucson <2>

Websites of Interest ...

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census.
<2>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
 

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This page was last modified/updated: 12 Jul 2025