Jasper County, Iowa#Micropolitan Statistical Area

{{Infobox U.S. county

| county = Jasper County

| state = Iowa

| ex image = Jasper County, Iowa Courthouse.jpg

| ex image size = 240px

| ex image cap = Jasper County Courthouse in Newton

| seal =

| founded year = 1846

| founded date =

| seat wl = Newton

| largest city wl = Newton

| area_total_sq_mi = 733

| area_land_sq_mi = 730

| area_water_sq_mi = 2.5

| area percentage = 0.3

| population_as_of = 2020

| population_total = 37813

| population_density_sq_mi = auto

| time zone = Central

| footnotes =

| web = https://jasperia.org/

| district = 2nd

| named for = William Jasper

}}

Jasper County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 37,813.{{cite web |title=2020 Census State Redistricting Data |url=https://www2.census.gov/programs-surveys/decennial/2020/data/01-Redistricting_File--PL_94-171/Iowa/ |website=census.gov |publisher=United states Census Bureau |access-date=August 12, 2021}} The county seat is Newton.{{cite web|url=http://www.naco.org/Counties/Pages/FindACounty.aspx |access-date=June 7, 2011 |title=Find a County |publisher=National Association of Counties |url-status=dead |archive-url=https://web.archive.org/web/20110531210815/http://www.naco.org/Counties/Pages/FindACounty.aspx |archive-date=May 31, 2011 }} The county was organized in 1846 and is named after Sergeant William Jasper, a Revolutionary War hero.{{cite book | url=https://books.google.com/books?id=HnwUAAAAYAAJ&pg=PA44 | title=Past and Present of Jasper County, Iowa, Volume 1 | publisher=B.F. Bowen | author=Weaver, James Baird | year=1912 | pages=44}}

Jasper County is part of the Des Moines–West Des Moines, IA Metropolitan Statistical Area.{{cite web|url=https://www.whitehouse.gov/omb/bulletins/fy2006/b06-01.pdf|title=Update of Statistical Area Definitions and Guidance on Their Uses|access-date=July 21, 2006|author=United States Office of Management and Budget|author-link=United States Office of Management and Budget|pages=5, 36|url-status=dead|archive-url = https://web.archive.org/web/20060514003222/http://www.whitehouse.gov/omb/bulletins/fy2006/b06-01.pdf |archive-date=May 14, 2006}}

Geography

According to the U.S. Census Bureau, the county has a total area of {{convert|733|sqmi}}, of which {{convert|730|sqmi}} is land and {{convert|2.5|sqmi}} (0.3%) is water.{{cite web|url=https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html|publisher=United States Census Bureau|access-date=April 23, 2011|date=February 12, 2011|title=US Gazetteer files: 2010, 2000, and 1990}} The North and South Skunk River flow through the county. Bodies of water include Lake Mariposa and Rock Creek.

=Major highways=

=Transit=

=Adjacent counties=

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

Demographics

{{US Census population

|1850= 1280

|1860= 9883

|1870= 22116

|1880= 25963

|1890= 24943

|1900= 26976

|1910= 27034

|1920= 27855

|1930=

|1940= 31496

|1950= 32305

|1960= 35282

|1970= 35425

|1980= 36425

|1990= 34795

|2000= 37213

|2010= 36842

|2020= 37813

|estyear=2023

|estimate=37919

|estref={{cite web|url=https://www.census.gov/programs-surveys/popest/data/tables.html|title=Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2023|publisher=United States Census Bureau|access-date=April 2, 2024}}

|align-fn=center

|footnote=U.S. Decennial Census{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=U.S. Decennial Census|publisher=United States Census Bureau|access-date=July 18, 2014}}
1790-1960{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=July 18, 2014}} 1900-1990{{cite web|url=https://www.census.gov/population/cencounts/ia190090.txt|title=Population of Counties by Decennial Census: 1900 to 1990|publisher=United States Census Bureau|access-date=July 18, 2014}}
1990-2000{{cite web|url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-url=https://web.archive.org/web/20100327165705/http://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-date=March 27, 2010 |url-status=live|title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000|publisher=United States Census Bureau|access-date=July 18, 2014}} 2010-2018{{cite web|title=State & County QuickFacts|url=http://quickfacts.census.gov/qfd/states/19/19099.html|publisher=United States Census Bureau|access-date=July 18, 2014|url-status=dead|archive-url=https://web.archive.org/web/20110607070154/http://quickfacts.census.gov/qfd/states/19/19099.html|archive-date=June 7, 2011}}

}}

File:JasperCountyIowaPop2020.png

=2020 census=

File:JasperCountyIA2022PopPyr.png for Jasper County from ACS 5-year estimates]]

The 2020 census recorded a population of 37,813 in the county, with a population density of {{Pop density|37813|733.593566|sqmi|km2}}. 96.04% of the population reported being of one race. There were 16,132 housing units, of which 14,994 were occupied.

class="wikitable"

|+Jasper County Racial Composition{{Cite web|title =P2 HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE – 2020: DEC Redistricting Data (PL 94-171) – Jasper County, Iowa|url=https://data.census.gov/cedsci/table?q=Jasper%20County,%20Iowa&t=Race%20and%20Ethnicity&tid=DECENNIALPL2020.P2}}

!Race

!Num.

!Perc.

White (NH)

|34,445

|91.1%

Black or African American (NH)

|683

|1.8%

Native American (NH)

|91

|0.24%

Asian (NH)

|215

|0.57%

Pacific Islander (NH)

|30

|.08%

Other/Mixed (NH)

|1,262

|3.33%

Hispanic or Latino

|1,087

|3%

=2010 census=

The 2010 census recorded a population of 36,842 in the county, with a population density of {{Pop density|36842|729.99|sqmi|km2}}. There were 16,181 housing units, of which 14,806 were occupied.{{cite web|url=https://www2.census.gov/library/publications/decennial/2010/cph-2/cph-2-17.pdf |archive-url=https://web.archive.org/web/20201016010401/https://www2.census.gov/library/publications/decennial/2010/cph-2/cph-2-17.pdf |archive-date=October 16, 2020 |url-status=live|title=Population & Housing Occupancy Status 2010|publisher=United States Census Bureau American FactFinder|access-date=August 15, 2022}}

=2000 census=

As of the census{{cite web|url=https://www.census.gov|publisher=United States Census Bureau|access-date=January 31, 2008|title=U.S. Census website}} of 2000, there were 37,213 people, 14,689 households, and 10,267 families residing in the county. The population density was {{convert|51|/mi2|/km2|disp=preunit|people |people}}. There were 15,659 housing units at an average density of {{convert|22|/mi2|/km2|disp=preunit|units |units|}}. 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."[http://www.doc.state.ia.us/institutions_detail.asp?id=15 Newton Correctional Facility] {{Webarchive|url=https://web.archive.org/web/20110613115645/http://www.doc.state.ia.us/institutions_detail.asp?id=15 |date=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"

{{PresHead|place=Jasper County, Iowa|source={{Cite web|url=http://uselectionatlas.org/RESULTS|title=Dave Leip's Atlas of U.S. Presidential Elections|last=Leip|first=David|website=uselectionatlas.org|access-date=April 26, 2018}}}}

Communities

=Cities=

(part)

=Unincorporated communities=

=Townships=

=Population ranking=

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

† county seat

class="wikitable sortable"
Rank !City/Town/etc. !Municipal type !Population (2020 Census)
style="background-color:#FFFACD;" \| 1 \|† Newton \| City \| 15,760
style="background-color:#FFFACD;" \| 2 \|Mitchellville (mostly in Polk County) \| City \| 2,485
style="background-color:#FFFACD;" \| 3 \|Colfax \| City \| 2,255
style="background-color:#FFFACD;" \| 4 \|Monroe \| City \| 1,967
style="background-color:#FFFACD;" \| 5 \|Prairie City \| City \| 1,700
style="background-color:#FFFACD;" \| 6 \|Baxter \| City \| 962
style="background-color:#FFFACD;" \| 7 \|Sully \| City \| 881
style="background-color:#FFFACD;" \| 8 \|Kellogg \| City \| 606
style="background-color:#FFFACD;" \| 9 \|Lynnville \| City \| 380
style="background-color:#FFFACD;" \| 10 \|Mingo \| City \| 302
style="background-color:#FFFACD;" \| 11 \|Oakland Acres \| City \| 176
style="background-color:#FFFACD;" \| 12 \|Lambs Grove \| City \| 174
style="background-color:#FFFACD;" \| 13 \|Reasnor \| City \| 152
style="background-color:#FFFACD;" \| 14 \|Valeria \| City \| 39

class="wikitable sortable"

Rank

!City/Town/etc.

!Municipal type

!Population (2020 Census)