Boundaries: U.S. Census Bureau · Population: Vintage 2024 estimates

Iowa county map

Iowa has 99 counties. Color the ones you've lived in, visited, or passed through, then share your map or download it.

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Pick a category, then click counties. Click again with the same color to clear. Drag to pan, scroll or pinch to zoom.

Every category is yours to change: click its swatch to pick any color, click its name to rename it, and use + Add for up to eight.

Most populous: Polk County, 516,185. Least populous: Adams County, 3,606.

Largest by land area: Kossuth County, 973 square miles.

Iowa borders Illinois, Minnesota, Missouri, Nebraska, South Dakota, and Wisconsin.

Populations are Census Bureau estimates for July 1, 2024.

All 99 counties