Pittsburgh
- County:
- Allegheny County
- County Seat:
- Yes
- Area (mi²):
- 55.378
- State:
- Pennsylvania
Pittsburgh is a city located in Allegheny County, Pennsylvania. Pittsburgh has a 2026 population of 307,668. It is also the county seat of Allegheny County. Pittsburgh is currently growing at a rate of 0.95% annually and its population has increased by 1.61% since the most recent census, which recorded a population of 302,798 in 2020.