Californias Population 2025. California's population increased in 2023 for the first time in three years. In 2019, the state reached another demographic milestone, becoming the first state.

In 2020 california’s population shrank for the first time since it joined the union in 1850. 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.