Iowa County, created in 1829 as a territorial county, is named after the Iowa Indians whose hunting grounds dominated the area. Iowa County is located in Southwest Wisconsin. The county has a total area of 768 square miles, of which 763 square miles is land and 5 square miles (0.70%) is water.
| County Seat: | Dodgeville |
| WCA District: | Southern |
| Land Area: | 762.7 sq. miles |
| Elevation: | 1,222 ft. at Dodgeville 1,719 ft. at Blue Mound |
| Rivers: | Blue, Pecatonica, Wisconsin, Yellowstone |
| Major Watershed: | Rock River (East), Wisconsin River (North), Mississippi River (West) |
| Geographical Province: | Western Upland |
| Natural Vegitation: | Mostly oak savanna, with a belt of prairie bluestem and composites across the center, and into the southeast and south-central areas of the county. |
| Population: | 1930: 20,039 1970: 19,306 1980: 19,802 1990: 20,150 2000: 22,780 2010: 23,687 |
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