🇺🇸 Johnson County, Iowa

United States · Americas · 41.67°N, 91.58°W

Johnson County is located in the U.S. state of Iowa. As of the 2020 census, the population was 152,854, and was estimated to be 160,044 in 2025, making it the fourth-most populous county in Iowa. The county seat and the largest city is Iowa City, home of the University of Iowa. Johnson County is included in the Iowa City metropolitan area, which is also included in the Cedar Rapids-Iowa City Corridor Combined Statistical Area.

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Quick facts

Country	United States
Continent / region	Americas
Coordinates (approx.)	41.67°N, 91.58°W · view on map

Johnson County, Iowa is located in United States, in Americas.

More counties in United States

Adair County, Iowa · Adams County, Iowa · Allamakee County, Iowa · Appanoose County, Iowa · Audubon County, Iowa · Benton County, Iowa · Black Hawk County, Iowa · Boone County, Iowa · Bremer County, Iowa · Buchanan County, Iowa.

Coordinates approximate. Introduction & image: Wikipedia (CC BY-SA 4.0), cached 30 days; the page renders even if the feed is momentarily unreachable.