Tucson
- County:
- Pima County
- County Seat:
- Yes
- Area (mi²):
- 242.884
- State:
- Arizona
Tucson is a city located in Pima County, Arizona. Tucson has a 2026 population of 554,013. It is also the county seat of Pima County. Tucson is currently growing at a rate of 0.74% annually and its population has increased by 2.09% since the most recent census, which recorded a population of 542,649 in 2020.