
Pittsburg
- County:
- Contra Costa County
- County Seat:
- No
- Area (mi²):
- 17.676
- State:
- California
Pittsburg is a city located in Contra Costa County, California. Pittsburg has a 2025 population of 75,435. Pittsburg is currently declining at a rate of -0.24% annually and its population has decreased by -1.2% since the most recent census, which recorded a population of 76,354 in 2020.
The average household income in Pittsburg is $123,266 with a poverty rate of 11.02%. The median age in Pittsburg is 35.8 years: 35 years for males, and 36.3 years for females.