Jasper County, Iowa

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Jasper County
Jasper County Courthouse in Newton
Map of Iowa highlighting Jasper County
Location within the U.S. state of Iowa
Map of the United States highlighting 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
Founded1846
Named forWilliam Jasper
SeatNewton
Largest cityNewton
Area
 • Total733 sq mi (1,900 km2)
 • Land730 sq mi (1,900 km2)
 • Water2.5 sq mi (6 km2)  0.3%
Population
 (2020)
 • Total37,813
 • Density52/sq mi (20/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district2nd
Websitewww.co.jasper.ia.us

Jasper County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 37,813.[1] The county seat is Newton.[2] The county was organized in 1846 and is named after Sergeant William Jasper, a Revolutionary War hero.[3]

Jasper County is part of the Des MoinesWest Des Moines, IA Metropolitan Statistical Area.[4]

Geography[edit]

According to the U.S. Census Bureau, the county has a total area of 733 square miles (1,900 km2), of which 730 square miles (1,900 km2) is land and 2.5 square miles (6.5 km2) (0.3%) is water.[5] The North and South Skunk River flow through the county. Bodies of water include Lake Mariposa and Rock Creek.

Major highways[edit]

Adjacent counties[edit]

Demographics[edit]

Historical population
Census Pop.
18501,280
18609,883672.1%
187022,116123.8%
188025,96317.4%
189024,943−3.9%
190026,9768.2%
191027,0340.2%
192027,8553.0%
193032,93618.2%
194031,496−4.4%
195032,3052.6%
196035,2829.2%
197035,4250.4%
198036,4252.8%
199034,795−4.5%
200037,2136.9%
201036,842−1.0%
202037,8132.6%
U.S. Decennial Census[6]
1790-1960[7] 1900-1990[8]
1990-2000[9] 2010-2018[10]
Population of Jasper County from US census data

2020 census[edit]

The 2020 census recorded a population of 37,813 in the county, with a population density of 51.5449/sq mi (19.90159/km2). 96.04% of the population reported being of one race. 89.33% were non-Hispanic White, 1.86% were Black, 2.87% were Hispanic, 0.33% were Native American, 0.57% were Asian, 0.08% were Native Hawaiian or Pacific Islander and 4.96% were some other race or more than one race. There were 16,132 housing units, of which 14,994 were occupied.[1]

2010 census[edit]

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.[11]

2000 census[edit]

2000 Census Age Pyramid for Jasper County

As of the census[12] 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.

Government and infrastructure[edit]

The Iowa Department of Corrections Newton Correctional Facility is in an unincorporated area in Jasper County, near Newton.[13]

United States presidential election results for Jasper County, Iowa[14]
Year Republican Democratic Third party
No.  % No.  % No.  %
2020 12,084 59.87% 7,737 38.33% 363 1.80%
2016 10,560 55.48% 7,109 37.35% 1,365 7.17%
2012 8,877 45.49% 10,257 52.56% 381 1.95%
2008 8,794 45.28% 10,250 52.78% 378 1.95%
2004 9,462 47.16% 10,430 51.99% 170 0.85%
2000 8,729 48.94% 8,699 48.77% 407 2.28%
1996 6,414 38.67% 8,776 52.92% 1,395 8.41%
1992 6,866 38.12% 8,120 45.08% 3,026 16.80%
1988 6,703 42.60% 8,940 56.82% 90 0.57%
1984 8,576 51.36% 8,023 48.04% 100 0.60%
1980 8,286 48.84% 7,258 42.78% 1,422 8.38%
1976 7,728 46.04% 8,783 52.32% 275 1.64%
1972 9,133 55.31% 7,007 42.43% 373 2.26%
1968 7,901 51.79% 6,556 42.98% 798 5.23%
1964 5,321 34.19% 10,216 65.65% 24 0.15%
1960 9,332 56.27% 7,242 43.67% 11 0.07%
1956 9,310 56.67% 7,098 43.21% 20 0.12%
1952 9,610 58.37% 6,756 41.03% 99 0.60%
1948 5,710 44.66% 6,684 52.28% 392 3.07%
1944 6,413 47.58% 6,978 51.77% 88 0.65%
1940 7,240 46.95% 8,129 52.71% 52 0.34%
1936 5,875 40.81% 8,315 57.76% 205 1.42%
1932 5,399 43.54% 6,781 54.68% 221 1.78%
1928 9,144 69.76% 3,857 29.42% 107 0.82%
1924 6,565 56.81% 1,214 10.50% 3,778 32.69%
1920 7,417 67.25% 3,390 30.74% 222 2.01%
1916 3,092 47.08% 3,282 49.97% 194 2.95%
1912 1,766 27.83% 2,487 39.20% 2,092 32.97%
1908 3,543 53.03% 2,889 43.24% 249 3.73%
1904 3,962 62.39% 1,942 30.58% 446 7.02%
1900 3,894 54.14% 3,163 43.97% 136 1.89%
1896 2,768 47.21% 3,019 51.49% 76 1.30%


Communities[edit]

Cities[edit]

Unincorporated communities[edit]

Townships[edit]

Population ranking[edit]

The population ranking of the following table is based on the 2020 census of Jasper County.[1]

county seat

Rank City/Town/etc. Municipal type Population (2020 Census)
1 Newton City 15,760
2 Mitchellville (mostly in Polk County) City 2,485
3 Colfax City 2,255
4 Monroe City 1,967
5 Prairie City City 1,700
6 Baxter City 962
7 Sully City 881
8 Kellogg City 606
9 Lynnville City 380
10 Mingo City 302
11 Oakland Acres City 176
12 Lambs Grove City 174
13 Reasnor City 152
14 Valeria City 39

Notable people[edit]

See also[edit]

References[edit]

  1. ^ a b c "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. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved July 18, 2014.
  7. ^ "Historical Census Browser". University of Virginia Library. Retrieved July 18, 2014.
  8. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 18, 2014.
  9. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 18, 2014.
  10. ^ "State & County QuickFacts". United States Census Bureau. Archived from the original on June 7, 2011. Retrieved July 18, 2014.
  11. ^ "Population & Housing Occupancy Status 2010" (PDF). United States Census Bureau American FactFinder. Retrieved August 15, 2022.
  12. ^ "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.
  13. ^ "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"
  14. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved April 26, 2018.
  15. ^ "Idaho Governor John Michiner Haines". National Governors Association. Archived from the original on March 4, 2016. Retrieved September 19, 2012.

External links[edit]

Coordinates: 41°41′17″N 93°03′41″W / 41.68806°N 93.06139°W / 41.68806; -93.06139