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Vacaville, California: population and official figures

Population (1 July)
103,850
2025

In depth

What is the population of Vacaville, California?

Vacaville, California, had an estimated 103,850 residents on 1 July 2025, the 323rd largest of the 824 US cities and towns with 50,000 or more people, and the 69th largest of 483 incorporated places in California (Census Bureau Vintage 2025 estimates).

Source: U.S. Census Bureau · saved copy

Is the population of Vacaville growing?

Its population is up 1,469 (1.4%) on the April 2020 estimates base of 102,381, 393rd slowest-growing of 824 US cities of 50,000 or more.

Source: U.S. Census Bureau · saved copy

How fast is Vacaville, California growing?

In the year to 1 July 2025 its population fell by 202 (0.19%), from 104,052 in July 2024.

Source: U.S. Census Bureau · saved copy

When does the fiscal year of Vacaville end?

The Census Bureau lists Vacaville's government in its 2024 finance survey as "Vacaville City", with a fiscal year that ends on 30 June.

Source: U.S. Census Bureau · saved copy

More figures

Who runs Vacaville?

In the United States, cities and towns are run by municipalities: Elected council; mayor elected directly or chosen by the council; in council-manager systems the council hires a professional city manager. Police, fire, local roads, zoning, water, parks. Townships exist in fewer than half the states.

How local power works in the United States

Vacaville is in California, which has 39,355,309 residents.

Cities of a similar size in the United States

Up a level: all cities in the United States · the United States · government and power

Sources

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