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Jasper County
County
Jasper County Courthouse in Newton
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 41°41′17″N 93°03′41″W / 41.688055555556°N 93.061388888889°W / 41.688055555556; -93.061388888889
Country	United States
State	Iowa
Founded	1846
Named for	William Jasper
Seat	Newton
Largest city	Newton
Area
• Total	733 sq mi (1,900 km)
• Land	730 sq mi (1,900 km)
• Water	2.5 sq mi (6 km)  0.3%
Population
• Total	37,813
• Density	52/sq mi (20/km)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	2nd
Website	jasperia.org

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–West Des Moines, IA Metropolitan Statistical Area.

Geography

According to the U.S. Census Bureau, the county has a total area of 733 square miles (1,900 km), of which 730 square miles (1,900 km) is land and 2.5 square miles (6.5 km) (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

The 2020 census recorded a population of 37,813 in the county, with a population density of 51.5449/sq mi (19.90159/km). 96.04% of the population reported being of one race. There were 16,132 housing units, of which 14,994 were occupied.

2010 census

The 2010 census recorded a population of 36,842 in the county, with a population density of 50.4692/sq mi (19.4863/km). 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 51 people per square mile (20 people/km). There were 15,659 housing units at an average density of 22 units per square mile (8.5 units/km). 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.

Communities

Cities

• Baxter
• Colfax
• Kellogg
• Lambs Grove
• Lynnville
• Mingo
• Mitchellville

(part)

• Monroe
• Newton
• Oakland Acres
• Prairie City
• Reasnor
• Sully
• Valeria

Unincorporated communities

• Ira
• Killduff
• Newburg
• Rushville

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

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.

See also

• National Register of Historic Places listings in Jasper County, Iowa

References

1. ^ "2020 Census State Redistricting Data". census.gov. United states Census Bureau. Retrieved August 12, 2021.
2. "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
3. Weaver, James Baird (1912). Past and Present of Jasper County, Iowa, Volume 1. B.F. Bowen. p. 44.
4. United States Office of Management and Budget. "Update of Statistical Area Definitions and Guidance on Their Uses" (PDF). pp. 5, 36. Archived from the original (PDF) on May 14, 2006. Retrieved July 21, 2006.
5. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
6. "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2023". United States Census Bureau. Retrieved April 2, 2024.
7. "U.S. Decennial Census". United States Census Bureau. Retrieved July 18, 2014.
8. "Historical Census Browser". University of Virginia Library. Retrieved July 18, 2014.
9. "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 18, 2014.
10. "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Archived (PDF) from the original on March 27, 2010. Retrieved July 18, 2014.
11. "State & County QuickFacts". United States Census Bureau. Archived from the original on June 7, 2011. Retrieved July 18, 2014.
12. "P2 HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE – 2020: DEC Redistricting Data (PL 94-171) – Jasper County, Iowa".
13. "Population & Housing Occupancy Status 2010" (PDF). United States Census Bureau American FactFinder. Archived (PDF) from the original on October 16, 2020. Retrieved August 15, 2022.
14. "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.
15. "Newton Correctional Facility Archived June 13, 2011, at the Wayback Machine." Iowa Department of Corrections. Retrieved on November 24, 2010. "Newton Correctional Facility 307 S. 60th Avenue W. P. O. Box 218 Newton, IA 50208"
16. Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved April 26, 2018.
17. "Idaho Governor John Michiner Haines". National Governors Association. Archived from the original on March 4, 2016. Retrieved September 19, 2012.

External links

• Jasper County government's website Archived March 18, 2018, at the Wayback Machine

v t e Places adjacent to Jasper County, Iowa
Story County Marshall County Polk County Jasper County, Iowa Poweshiek County Marion County Mahaska County

v t e Municipalities and communities of Jasper County, Iowa, United States
County seat: Newton
Cities	Baxter Colfax Kellogg Lambs Grove Lynnville Mingo Mitchellville‡ Monroe Newton Oakland Acres Prairie City Reasnor Sully Valeria
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
Unincorporated communities	Clyde Fairmount Galesburg Green Castle Ira Killduff Metz Murphy Newburg Rushville Vandalia
Footnotes	‡This populated place also has portions in an adjacent county or counties
Iowa portal United States portal

v t e State of Iowa
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Regions	Coteau des Prairies Des Moines metropolitan area Dissected Till Plains Driftless Area Great River Road Honey Lands Iowa Great Lakes Loess Hills Omaha–Council Bluffs metropolitan area Quad Cities Siouxland
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41°41′17″N 93°03′41″W / 41.68806°N 93.06139°W / 41.68806; -93.06139

• Iowa counties
• Jasper County, Iowa
• 1846 establishments in Iowa Territory
• Populated places established in 1846