California State Population 2024 By Age. California is the most populous state in the united states, with a resident population of almost 40 million people. Quickfacts provides statistics for all states and counties.

The california department of finance released a population estimate on tuesday showing the. This report presents preliminary state and county population estimates for july 1, 2023, revised estimates for july 1, 2020, july 1, 2021, july 1, 2022, and components of.