California Population 2025 Census Estimate. The california department of finance projects a steady 0.5% annual growth rate from 2025 onward, as infrastructure and green technology investments continue. The population of california in 2024 was 39,431,263, a 0.59% increase from 2023.

Usafacts uses census data to break down the population of california by race, age, and more. Projections of population with components of change, births, and public school enrollment at the state and county level produced by the demographic research unit (dru).