California's Population Growth Stalls, Impacting National Political Clout

New census data shows California's population has hit a plateau, with implications for congressional representation and presidential elections.

Feb. 6, 2026 at 8:39am

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According to new census data, California's population growth has stalled, with the state either gaining residents very slowly or even losing them in recent years. This population plateau contrasts with the state's history of rapid growth and has significant political implications, as it is expected to result in California losing several congressional seats after the 2030 census, while fast-growing Republican-leaning states gain seats, shifting the balance of power in national elections.

Why it matters

California's population growth has long been a key driver of its political influence, with the state's large and growing population translating into more congressional seats and electoral votes. The stagnation or decline of California's population threatens to erode this political clout, potentially benefiting Republican candidates in future presidential elections and shifting the balance of power in Congress.

The details

According to the latest estimates, California's population stood at 39.355 million as of last year, a decline of 9,465 from the previous year. This contrasts with the state's own Department of Finance, which reported a small gain of 19,200 residents. The difference highlights the debate over whether California is truly in decline or simply experiencing a population plateau. Regardless, the state's population growth has stalled, a stark contrast to the rapid growth of previous decades, when the state's population soared by nearly 25% in the 1980s. Demographers attribute the slowdown to stagnant levels of foreign migration, a lower birth rate, and an ongoing exodus of residents, particularly those without college degrees, to other states like Texas.

  • In December 2025, the California Department of Finance reported the state's population was 39.529 million as of July 2025, a gain of 19,200 since 2024.
  • In January 2026, the U.S. Census Bureau released its latest estimates, fixing California's population at 39.355 million, a decline of 9,465 from the previous year.

The players

California Department of Finance

The state agency that annually announces California's population numbers based on calculations of births, deaths, and migration.

U.S. Census Bureau

The federal agency that annually announces new population numbers for the country and its 50 states based on calculations of demographic changes.

Hans Johnson

Demographer for the Public Policy Institute of California who has charted the trend of population stagnation and out-migration from the state.

Eric McGhee

Demographer for the Public Policy Institute of California who has charted the trend of population stagnation and out-migration from the state.

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What they’re saying

“This migration, over the decades, has the power to reshape the state. From 2010 through 2024 (the year of the latest data) almost 10 million people moved from California to other states, while just over 7 million people moved to California from other parts of the country, according to the American Community Survey.”

— Hans Johnson, Demographer, Public Policy Institute of California (pasadenanow.com)

“In fact, according to Department of Finance estimates, the state has lost residents to other states every year since 2001.”

— Eric McGhee, Demographer, Public Policy Institute of California (pasadenanow.com)

What’s next

The shift in congressional seats and electoral votes due to California's population stagnation is expected to benefit Republican candidates in future presidential elections, as fast-growing Republican-leaning states gain representation at the expense of Democratic-leaning California.

The takeaway

California's population plateau, after decades of rapid growth, represents a significant political shift that could reshape the national political landscape, with implications for congressional representation and presidential elections in the coming years.