Jasper County, Iowa

Jasper County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 37,813. The county seat is Newton. The county was organized in 1846 and is named after Sergeant William Jasper, a Revolutionary War hero.

Jasper County is part of the Des Moines metropolitan area.

Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.3%) is water. The North and South Skunk River flow through the county. Bodies of water include Lake Mariposa and Rock Creek.

Major highways

Interstate 80 U.S. Highway 6 U.S. Highway 65 Iowa Highway 14 Iowa Highway 117 Iowa Highway 163 Iowa Highway 224 Iowa Highway 330

Transit

Adjacent counties Marshall County (north) Poweshiek County (east) Mahaska County (southeast) Marion County (south) Polk County (west) Story County (northwest)

Demographics

2020 census

As of the 2020 census, the county had a population of 37,813 and a population density of . 96.04% of residents reported being of one race.

+Jasper County Racial CompositionRaceNumberPercentWhite (NH)34,44591.1%Black or African American (NH)6831.8%Native American (NH)910.24%Asian (NH)2150.57%Pacific Islander (NH)30.08%Other/Mixed (NH)1,2623.33%Hispanic or Latino1,0873%

The median age was 42.1 years. 22.1% of residents were under the age of 18 and 19.5% of residents were 65 years of age or older. For every 100 females there were 106.6 males, and for every 100 females age 18 and over there were 106.2 males age 18 and over.

There were 14,994 households in the county, of which 28.2% had children under the age of 18 living in them. Of all households, 52.0% were married-couple households, 18.2% were households with a male householder and no spouse or partner present, and 23.0% were households with a female householder and no spouse or partner present. About 28.5% of all households were made up of individuals and 13.0% had someone living alone who was 65 years of age or older.

The racial makeup of the county was 92.2% White, 1.9% Black or African American, 0.3% American Indian and Alaska Native, 0.6% Asian, 0.1% Native Hawaiian and Pacific Islander, 1.0% from some other race, and 4.0% from two or more races. Hispanic or Latino residents of any race comprised 2.9% of the population.

42.2% of residents lived in urban areas, while 57.8% lived in rural areas.

There were 16,132 housing units, of which 14,994 were occupied. Among occupied housing units, 74.3% were owner-occupied and 25.7% were renter-occupied. The homeowner vacancy rate was 1.7% and the rental vacancy rate was 7.4%.

2010 census The 2010 census recorded a population of 36,842 in the county, with a population density of . There were 16,181 housing units, of which 14,806 were occupied.

2000 census As of the census of 2000, there were 37,213 people, 14,689 households, and 10,267 families residing in the county. The population density was . There were 15,659 housing units at an average density of . 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.

Government and infrastructure The Iowa Department of Corrections Newton Correctional Facility is in an unincorporated area in Jasper County, near Newton."Newton Correctional Facility ." Iowa Department of Corrections. Retrieved on November 24, 2010. "Newton Correctional Facility 307 S. 60th Avenue W. P. O. Box 218 Newton, IA 50208"

Communities

Cities

Baxter Colfax Kellogg Lambs Grove Lynnville Mingo Mitchellville (part) Monroe Newton Oakland Acres Prairie City Reasnor Sully Valeria

Unincorporated communities Clyde Fairmount Galesburg Goddard Green Castle Ira Killduff Metz Murphy Newburg Rushville Vandalia

Townships

Buena Vista Clear Creek Des Moines Elk Creek Fairview Hickory Grove Independence Kellogg Lynn Grove Malaka Mariposa Mound Prairie Newton Palo Alto Poweshiek Richland Rock Creek Sherman Washington

Population ranking The population ranking of the following table is based on the 2020 census of Jasper County.

† county seat

RankCity/Town/etc.Municipal typePopulation(2020 Census)Population(2024 Estimate) 1† Newton City 15,760 15,766 2Mitchellville (mostly in Polk County) City 2,485 2,717 3Colfax City 2,255 2,277 4Monroe City 1,967 2,025 5Prairie City City 1,700 1,712 6Baxter City 962 1,022 7Sully City 881 901 8Kellogg City 606 615 9Lynnville City 380 394 10Mingo City 302 317 11Oakland Acres City 176 200 12Lambs Grove City 174 189 13Reasnor City 152 142 14Valeria City 39 29

Notable people John M. Haines, tenth governor of Idaho; born in Jasper County. Lyle Goodhue, chemist and inventor, born in Jasper County. Sara Haines, American television host and journalist.

Jasper County, Iowa

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