California’s Changing Population

Hans Johnson, Marisol Cuellar Mejia, and Eric McGhee

With 39.5 million people, California is the most populous state by far and home to almost a quarter of the nation’s immigrants. Rates of population growth have slowed notably in recent years—between 2022 and 2025, the state grew by just 309,000 people.

» California’s Population

» Immigrants in California

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For additional resources, visit PPIC’s population page.

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