California Population 2024 Graph. 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). 51 rows by far the most populous state in the united states is california, which has more than 40 million residents and comprises nearly 12% of the country’s total population.

Chart and table of population level and growth rate for the los angeles metro area from 1950 to 2024. Quickfacts provides statistics for all states and counties.