California Population 2024. Chart and table of population level and growth rate for the state of california from 1900 to 2023. Charts show most detailed data on how california’s population is changing by county.

This report provides population estimates for january 1, 2021 through january 1, 2023 and provisional population estimates for january 1, 2024, for the state, counties, and cities. The golden state’s population was 39,538,223 in 2020, a 6.1% increase since 2010 but slower than its 10% gain in the previous decade.