Jasper County, Iowa

Geography

According to the U.S. Census Bureau, the county has a total area of 733 sqmi, of which 730 sqmi is land and 2.5 sqmi (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

• [[Image:I-80.svg|x20px]] Interstate 80
• [[Image:US 6.svg|x20px]] U.S. Highway 6
• [[Image:US 65.svg|x20px]] U.S. Highway 65
• [[Image:Elongated circle 14.svg|x20px]] Iowa Highway 14
• [[Image:Elongated circle 117.svg|x20px]] Iowa Highway 117
• [[Image:Elongated circle 163.svg|x20px]] Iowa Highway 163
• [[Image:Elongated circle 224.svg|x20px]] Iowa Highway 224
• [[Image:Elongated circle 330.svg|x20px]] 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

|align-fn=center 1790-1960 1900-1990 1990-2000 2010-2018

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.

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 51 /mi2. There were 15,659 housing units at an average density of 22 /mi2. 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

• 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

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.

References

References

1. "2020 Census State Redistricting Data". United states Census Bureau.
2. "Find a County". National Association of Counties.
3. Weaver, James Baird. (1912). "Past and Present of Jasper County, Iowa, Volume 1". B.F. Bowen.
4. United States Office of Management and Budget. "Update of Statistical Area Definitions and Guidance on Their Uses".
5. (February 12, 2011). "US Gazetteer files: 2010, 2000, and 1990". [[United States Census Bureau]].
6. "Population and Housing Unit Estimates Tables". United States Census Bureau.
7. "U.S. Decennial Census". United States Census Bureau.
8. "Historical Census Browser". University of Virginia Library.
9. "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau.
10. "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000". United States Census Bureau.
11. "State & County QuickFacts". United States Census Bureau.
12. (2021). "2020 Decennial Census Demographic Profile (DP1)".
13. (2021). "2020 Decennial Census Redistricting Data (Public Law 94-171)".
14. "P2 HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE – 2020: DEC Redistricting Data (PL 94-171) – Jasper County, Iowa".
15. (2023). "2020 Decennial Census Demographic and Housing Characteristics (DHC)".
16. "Population & Housing Occupancy Status 2010". [[United States Census Bureau]] American FactFinder.
17. "U.S. Census website". [[United States Census Bureau]].
18. link. (June 13, 2011 ." [[Iowa Department of Corrections]]. Retrieved on November 24, 2010. "Newton Correctional Facility 307 S. 60th Avenue W. P. O. Box 218 Newton, IA 50208")
19. Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections".
20. "Idaho Governor John Michiner Haines". National Governors Association.