Pima County is in the south‑central part of Arizona, in the southern half of the state along the border with Mexico. Its county seat is Tucson, Arizona’s second‑largest city, and most of the county’s population is concentrated in and around Tucson.

Quick Scoop: Where is Pima County in Arizona?

  • It lies in southern Arizona, roughly south‑central within the state.
  • It borders Mexico to the south and includes both desert lowlands and surrounding mountain ranges.
  • Tucson, in the eastern part of the county, is the main urban center and government hub.
  • The area includes well‑known sites like Saguaro National Park and the Arizona‑Sonora Desert Museum.

If you picture Arizona as a rectangle, Pima County sits in the lower middle, stretching from the urban Tucson area westward into wide desert and reservation lands, and south to the international border.

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