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Fort Collins, Colorado: population and official figures

Population (1 July)
171,500
2025

In depth

What is the population of Fort Collins, Colorado?

Fort Collins, Colorado, had an estimated 171,500 residents on 1 July 2025, the 155th largest of the 824 US cities and towns with 50,000 or more people, and the 4th largest of 272 incorporated places in Colorado (Census Bureau Vintage 2025 estimates).

Source: U.S. Census Bureau · saved copy

Is the population of Fort Collins growing?

Its population is up 1,720 (1.0%) on the April 2020 estimates base of 169,780, 356th slowest-growing of 824 US cities of 50,000 or more.

Source: U.S. Census Bureau · saved copy

How fast is Fort Collins, Colorado growing?

In the year to 1 July 2025 its population rose by 773 (0.45%), from 170,727 in July 2024.

Source: U.S. Census Bureau · saved copy

When does the fiscal year of Fort Collins end?

The Census Bureau lists Fort Collins' government in its 2022 finance survey as "Fort Collins City", with a fiscal year that ends on 31 December.

Source: U.S. Census Bureau · saved copy

More figures

Who runs Fort Collins?

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

Fort Collins is in Colorado, which has 6,012,561 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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