Solano County Flag

Solano County

State:
California
County Seat:
Fairfield

Solano County's estimated 2026 population is 463,183 with a growth rate of 0.88% in the past year according to the most recent United States census data. Solano County is the 19th largest county in California. The 2010 population was 413,963 and has seen a growth of 11.89% since that time.

463,183
Total Population
563
Population Density (mi²)
19
Population Rank (State)
4K 0.88%
Annual Population Growth

Solano County Population

Demographics

Economics and Income Statistics