California’s Changing Population

Hans Johnson, Eric McGhee, Marisol Cuellar Mejia, and Cesar Alesi Perez

California remains the most populous US state, and it is home to almost a quarter of the nation’s immigrants. After three years of declines—largely due to falling birthrates, rising migration out of the state, and low international immigration flows—the state population grew in 2024.

» California's Population

» Immigrants in California

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For additional resources, visit PPIC’s population page.

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