California Population Growth 2024. 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. California is the most populous state in the us with a nominal gdp at $3.9 trillion usd, 5th highest in the world and 14.2% of the united states nominal gdp.

Minor changes in sex distribution; In 2023 california’s population grew by nearly 0.2%,.