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Tucson, the Pima County seat, with the Santa Catalina Mountains.
Public domain. U.S. Department of Transportation. This photograph is Tucson, the county seat, not the whole of Pima County.

Southern Arizona

Pima County, Arizona

By Trameze Jones, REALTOR® · Last updated Nov 2026

Pima County, Arizona, had 1,043,433 people in the 2020 Census. The 2024 Gazetteer lists 9,188.683 square miles of land. The county seat is Tucson, under A.R.S. § 11-112. Trameze Jones serves this county from the OMNI office at 7445 N Oracle Rd Ste 201, Tucson, AZ 85704.

1,043,4332020 Census population
9,188.683Square miles of land
TucsonCounty seat
  • Pima
  • Cochise
  • Santa Cruz

How many people live in Pima County?

The 2020 Census counted 1,043,433 people in Pima County. In that same 2020 Census county file, Maricopa County had 4,420,568 people and Pinal County had 425,264. Pima County was second among Arizona counties.

What is the county seat?

A.R.S. § 11-112 says the county seat of Pima County is Tucson. Read the Tucson page. The statute is A.R.S. § 11-112.

How large is the county?

The 2024 Census Gazetteer measures 9,188.683 square miles of land and 1.974 square miles of water.

County website: www.pima.gov/

This page lists every incorporated place and census designated place the 2020 Census assigned to Pima County. Neighborhoods inside a city are not separate pages. Sources.

Which incorporated cities and towns are listed?

  • Marana, incorporated town, 51,908 people in 2020
  • Oro Valley, incorporated town, 47,070 people in 2020
  • Sahuarita, incorporated town, 34,134 people in 2020
  • South Tucson, incorporated city, 4,613 people in 2020
  • Tucson, incorporated city, 542,629 people in 2020

Which census designated places are listed?

Smaller places in Pima County

These census designated places are too small for a page of their own. Each had fewer than 1,000 people in the 2020 Census, and Redfin reported few or no home sales there in the last 12 months. For a home in one of them, Trameze prepares a comparative market analysis (CMA) from nearby sales. Request a CMA or ask a question.

  • Ak Chin: census designated place; 50 people in 2020; 0.526 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Ali Chuk: census designated place; 119 people in 2020; 1.442 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Ali Chukson: census designated place; 113 people in 2020; 2.069 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Ali Molina: census designated place; 61 people in 2020; 0.771 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Anegam: census designated place; 149 people in 2020; 2.312 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Charco: census designated place; 27 people in 2020; 0.931 sq mi of land; ZIP area (2020 ZCTA) 85321
  • Chiawuli Tak: census designated place; 48 people in 2020; 2.435 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Comobabi: census designated place; 44 people in 2020; 0.82 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Cowlic: census designated place; 105 people in 2020; 0.8 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Gu Oidak: census designated place; 126 people in 2020; 6.92 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Haivana Nakya: census designated place; 72 people in 2020; 1.861 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Ko Vaya: census designated place; 43 people in 2020; 1.1 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Maish Vaya: census designated place; 129 people in 2020; 4.235 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Nelson: census designated place; 249 people in 2020; 0.474 sq mi of land; ZIP area (2020 ZCTA) 85653
  • Nolic: census designated place; 12 people in 2020; 0.522 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Pisinemo: census designated place; 359 people in 2020; 2.269 sq mi of land; ZIP area (2020 ZCTA) 85634
  • San Miguel: census designated place; 205 people in 2020; 5.652 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Santa Rosa: census designated place; 474 people in 2020; 6.511 sq mi of land; ZIP area (2020 ZCTA) 85634
  • South Komelik: census designated place; 176 people in 2020; 3.9 sq mi of land; ZIP area (2020 ZCTA) 85634
  • Topawa: census designated place; 233 people in 2020; 5.149 sq mi of land; ZIP areas (2020 ZCTAs) 85639, 85634
  • Ventana: census designated place; 52 people in 2020; 1.037 sq mi of land; ZIP area (2020 ZCTA) 85321
  • Wahak Hotrontk: census designated place; 88 people in 2020; 1.541 sq mi of land; ZIP area (2020 ZCTA) 85634

Population: 2020 Census. Land area: 2024 Census Gazetteer. ZIP areas: 2020 Census ZCTA relationship file. See the sources page.

What is a home in Pima County worth?

This site does not publish a county-wide price. What Trameze would do is price from closed sales of similar homes near the address, and from how many days those homes took to sell. Send the address and Trameze will reply with a range and an estimated net.

Call (520) 244-5692 or book a time.

Get a home value

A preliminary CMA, not an instant number

Send the address. Trameze replies with a range from closed sales and days on market, and an estimated net. This site does not publish a county-wide price here.