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Idaho Falls, Idaho: population and official figures

Population (1 July)
71,785
2025

In depth

What is the population of Idaho Falls, Idaho?

Idaho Falls, Idaho, had an estimated 71,785 residents on 1 July 2025, the 544th largest of the 824 US cities and towns with 50,000 or more people, and the 5th largest of 198 incorporated places in Idaho (Census Bureau Vintage 2025 estimates).

Source: U.S. Census Bureau · saved copy

Is the population of Idaho Falls growing?

Its population is up 6,180 (9.4%) on the April 2020 estimates base of 65,605, 114th fastest-growing of 824 US cities of 50,000 or more.

Source: U.S. Census Bureau · saved copy

How fast is Idaho Falls, Idaho growing?

In the year to 1 July 2025 its population rose by 2,217 (3.19%), from 69,568 in July 2024.

Source: U.S. Census Bureau · saved copy

When does the fiscal year of Idaho Falls end?

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

Source: U.S. Census Bureau · saved copy

More figures

Who runs Idaho Falls?

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

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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