California Population 2024 Chart 2024. This is the first 2020 census data release available on the census bureau’s data dissemination platform, data.census.gov. 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.
Here’s how much the demographic has changed throughout history. The state recorded its highest growth in 1961 (3.95%) and recorded its lowest growth in 2021.