| Jasper County, Iowa | |
Location in the state of Iowa |
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Iowa's location in the U.S. |
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| Founded | 1846 |
|---|---|
| Seat | Newton |
| Area - Total - Land - Water |
732.93 sq mi (1,898 km²) 729.99 sq mi (1,891 km²) 2.94 sq mi (8 km²), 0.40% |
| Population - (2010) - Density |
36,842 50/sq mi (19/km²) |
| Time zone | Central: UTC-6/-5 |
| Website | www.co.jasper.ia.us |
| Footnotes: Population[1] | |
Jasper County is a county located in the US state of Iowa. It was organized in 1846 and is named after Sergeant William Jasper, Revolutionary War hero. The population was 36,842 in the 2010 census, a decline from 37,213 in the 2000 census.[1][2] Jasper was the 19th most populous county of Iowa's 99 total counties in the 2000 census, however even with the decline in population in the 2010 census it moved up to 18th. The county seat is Newton[3]. Jasper County is the only county in the Newton Micropolitan Statistical Area, which is part of the Des Moines-Newton-Pella Combined Statistical Area.[4]
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According to the 2000 census, the county has a total area of 732.93 square miles (1,898.3 km2), of which 729.99 square miles (1,890.7 km2) (or 99.60%) is land and 2.94 square miles (7.6 km2) (or 0.40%) is water.[5] The North and South Skunk River flow through the county. Bodies of water include Lake Mariposa and Rock Creek.
| Historical populations | |||
|---|---|---|---|
| Census | Pop. | %± | |
| 1850 | 1,280 |
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| 1860 | 9,883 | 672.1% | |
| 1870 | 22,116 | 123.8% | |
| 1880 | 25,963 | 17.4% | |
| 1890 | 24,943 | −3.9% | |
| 1900 | 26,976 | 8.2% | |
| 1910 | 27,034 | 0.2% | |
| 1920 | 27,855 | 3.0% | |
| 1930 | 32,936 | 18.2% | |
| 1940 | 31,496 | −4.4% | |
| 1950 | 32,305 | 2.6% | |
| 1960 | 35,282 | 9.2% | |
| 1970 | 35,425 | 0.4% | |
| 1980 | 36,425 | 2.8% | |
| 1990 | 34,795 | −4.5% | |
| 2000 | 37,213 | 6.9% | |
| 2010 | 36,842 | −1.0% | |
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The 2010 census recorded a population of 36,842 in the county, with a population density of 50.4692/sq mi (19.4863/km2). There were 16,181 housing units, of which 14,806 were occupied.[1]
As of the census[6] of 2000, there were 37,213 people, 14,689 households, and 10,267 families residing in the county. The population density was 51 people per square mile (20/km²). There were 15,659 housing units at an average density of 22 per square mile (8/km²). The racial makeup of the county was 97.58% White, 0.83% Black or African American, 0.22% Native American, 0.44% Asian, 0.05% Pacific Islander, 0.26% from other races, and 0.62% from two or more races. 1.01% of the population were Hispanic or Latino of any race.
There were 14,689 households out of which 31.70% had children under the age of 18 living with them, 59.30% were married couples living together, 7.40% had a female householder with no husband present, and 30.10% were non-families. 26.10% of all households were made up of individuals and 11.80% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.92.
In the county, the population was spread out with 24.60% under the age of 18, 7.40% from 18 to 24, 28.60% from 25 to 44, 23.40% from 45 to 64, and 16.00% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 101.60 males. For every 100 females age 18 and over, there were 99.70 males.
The median income for a household in the county was $41,683, and the median income for a family was $50,071. Males had a median income of $36,001 versus $24,770 for females. The per capita income for the county was $19,622. About 4.80% of families and 6.50% of the population were below the poverty line, including 7.10% of those under age 18 and 7.00% of those age 65 or over.
The Iowa Department of Corrections Newton Correctional Facility is in an unincorporated area in Jasper County, near Newton.[7]
| Story County | Marshall County | |||
| Polk County | Poweshiek County | |||
| Jasper County, Iowa | ||||
| Marion County | Mahaska County |
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