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Oak Park, Illinois: population and official figures

Population (1 July)
52,823
2025

In depth

What is the population of Oak Park, Illinois?

Oak Park, Illinois, had an estimated 52,823 residents on 1 July 2025, the 778th largest of the 824 US cities and towns with 50,000 or more people, and the 28th largest of 1294 incorporated places in Illinois (Census Bureau Vintage 2025 estimates).

Source: U.S. Census Bureau · saved copy

Is the population of Oak Park growing?

Its population is down 1,951 (3.6%) on the April 2020 estimates base of 54,774, 51st slowest-growing of 824 US cities of 50,000 or more.

Source: U.S. Census Bureau · saved copy

How fast is Oak Park, Illinois growing?

In the year to 1 July 2025 its population fell by 156 (0.29%), from 52,979 in July 2024.

Source: U.S. Census Bureau · saved copy

When does the fiscal year of Oak Park end?

The Census Bureau lists Oak Park's government in its 2024 finance survey as "Oak Park Village", with a fiscal year that ends on 31 December.

Source: U.S. Census Bureau · saved copy

More figures

Who runs Oak Park?

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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