Marshall County, Iowa
Marshall County, Iowa | |
|---|---|
The courthouse in Marshalltown is on the NRHP | |
Location within the U.S. state of Iowa | |
| Coordinates: 42°02′30″N 92°58′53″W / 42.041700°N 92.981403°W | |
| Country | United States |
| State | Iowa |
| Founded | January 13, 1846 |
| Named after | John Marshall |
| Seat | Marshalltown |
| Largest city | Marshalltown |
| Area | |
• Total | 573.199 sq mi (1,484.58 km2) |
| • Land | 572.503 sq mi (1,482.78 km2) |
| • Water | 0.696 sq mi (1.80 km2) 0.12% |
| Population (2020) | |
• Total | 40,105 |
• Estimate (2024) | 40,392 |
| • Density | 70.052/sq mi (27.047/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Area code | 641 |
| Congressional district | 1st |
| Website | marshallcountyia.gov |
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Marshall County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 40,105, and was estimated to be 40,392 in 2024. The county seat and largest city is Marshalltown. The county was formed on January 13, 1846, and named after John Marshall, Chief Justice of the United States Supreme Court. Marshall County comprises the Marshalltown, Iowa Micropolitan Statistical Area. In 2010, the center of population of Iowa was located in Marshall County, near Melbourne.