Clayton County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 17,043. Its county seat is Elkader. The county was established in 1837 and was named in honor of John M. Clayton, United States Senator from Delaware and later Secretary of State under President Zachary Taylor.
| Name: | Clayton County |
|---|---|
| FIPS code: | 19-043 |
| State: | Iowa |
| Founded: | 1837 |
| Named for: | John M. Clayton |
| Seat: | Elkader |
| Largest city: | Guttenberg |
| Total Area: | 793 sq mi (2,050 km²) |
| Land Area: | 779 sq mi (2,020 km²) |
| Total Population: | 17,043 |
| Population Density: | 21/sq mi (8.3/km²) |
| Time zone: | UTC−6 (Central) |
| Summer Time Zone (DST): | UTC−5 (CDT) |
| Website: | www.claytoncountyia.gov |
Clayton County location map. Where is Clayton County?
Clayton County Road Map
Geography
According to the U.S. Census Bureau, the county has a total area of 793 square miles (2,050 km), of which 779 square miles (2,020 km) is land and 14 square miles (36 km) (1.8%) is water. It is the fifth-largest county in Iowa by area.
Adjacent counties
- Allamakee County (north)
- Crawford County, Wisconsin (northeast)
- Grant County, Wisconsin (east)
- Dubuque County (southeast)
- Delaware County (south)
- Buchanan County (southwest)
- Fayette County (west)
- Winneshiek County (northwest)
Major highways
- U.S. Highway 18
- U.S. Highway 52
- Iowa Highway 3
- Iowa Highway 13
- Iowa Highway 56
- Iowa Highway 76
- Iowa Highway 128
National protected areas
- Driftless Area National Wildlife Refuge (part)
- Effigy Mounds National Monument (part)
- Upper Mississippi River National Wildlife and Fish Refuge (part)
Geology
Clayton County is part of the Driftless Area, a region that completely missed being ice-covered during the last ice age. Streams have deeply carved valleys, while the Mississippi River has spectacular bluffs.
Clayton County Topographic Map
Clayton County Satellite Map
Clayton County Outline Map
