Jefferson County, Iowa
| Jefferson County, Iowa | |
|---|---|
Courthouse in Fairfield is on the NRHP
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 Location in the U.S. state of Iowa |
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 Iowa's location in the U.S. |
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| Founded | 1839 |
| Named for | Thomas Jefferson |
| Seat | Fairfield |
| Largest city | Fairfield |
| Area | |
| • Total | 437 sq mi (1,132 km2) |
| • Land | 436 sq mi (1,129 km2) |
| • Water | 1.4 sq mi (4 km2), 0.3% |
| Population | |
| • (2010) | 16,843 |
| • Density | 39/sq mi (15/km²) |
| Congressional district | 2nd |
| Time zone | Central: UTC-6/-5 |
| Website | County website |
Jefferson County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 16,843. The county seat is Fairfield. The county was formed on January 21, 1839 and named after President Thomas Jefferson.
Jefferson County comprises the Fairfield, IA Micropolitan Statistical Area.
According to the U.S. Census Bureau, the county has a total area of 437 square miles (1,130 km2), of which 436 square miles (1,130 km2) is land and 1.4 square miles (3.6 km2) (0.3%) is water.
The 2010 census recorded a population of 16,843 in the county, with a population density of 38.6893/sq mi (14.9380/km2). There were 7,594 housing units, of which 6,846 were occupied.
As of the census of 2000, there were 16,181 people, 6,649 households, and 4,281 families residing in the county. The population density was 37 people per square mile (14/km²). There were 7,241 housing units at an average density of 17 per square mile (6/km²). The racial makeup of the county was 96.02% White, 0.64% Black or African American, 0.17% Native American, 1.70% Asian, 0.04% Pacific Islander, 0.53% from other races, and 0.91% from two or more races. 1.84% of the population were Hispanic or Latino of any race.
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