Berkeley
- County:
- Alameda County
- County Seat:
- No
- Area (mi²):
- 10.432
- State:
- California
Berkeley is a city located in Alameda County, California. Berkeley has a 2026 population of 121,749. Berkeley is currently growing at a rate of 1.19% annually but its population has decreased by -1.99% since the most recent census, which recorded a population of 124,219 in 2020.