Population Of Southern California 2024. The state population, which had declined since 2020, rose last year by 67,100 residents to 39.13 million people, driven largely by lower mortality and. California's population increased in 2023 for the first time in three years.
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. 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.