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Joliet, Illinois: population and official figures

Population (1 July)
152,241
2025

In depth

What is the population of Joliet, Illinois?

Joliet, Illinois, had an estimated 152,241 residents on 1 July 2025, the 180th largest of the 824 US cities and towns with 50,000 or more people, and the 4th largest of 1294 incorporated places in Illinois (Census Bureau Vintage 2025 estimates).

Source: U.S. Census Bureau · saved copy

Is the population of Joliet growing?

Its population is up 1,738 (1.2%) on the April 2020 estimates base of 150,503, 368th slowest-growing of 824 US cities of 50,000 or more.

Source: U.S. Census Bureau · saved copy

How fast is Joliet, Illinois growing?

In the year to 1 July 2025 its population rose by 337 (0.22%), from 151,904 in July 2024.

Source: U.S. Census Bureau · saved copy

When does the fiscal year of Joliet end?

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

Source: U.S. Census Bureau · saved copy

More figures

Who runs Joliet?

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

Joliet is in Illinois, which has 12,719,141 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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