Benicia
- County:
- Solano County
- County Seat:
- No
- Area (mi²):
- 12.813
- State:
- California
Benicia is a city located in Solano County, California. Benicia has a 2026 population of 26,477. Benicia is currently declining at a rate of -0.1% annually and its population has decreased by -2.32% since the most recent census, which recorded a population of 27,107 in 2020.