County · Iowa
Jasper County, Iowa
Jasper County, Iowa. Jasper County had 38,153 residents in 2025 by the Census Bureau's estimate, up 0.9% since 2020, slower than Iowa (+1.5%). It holds 14 places (14 cities, villages and boroughs) and 10 census tracts. GEOID 19099.
Jasper County is one of the 6 counties of the Des Moines-West Des Moines, IA metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
38,153
Census Bureau estimate (no margin published)
2020 Census count: 37,813 · ACS 2020-2024: 37,954
Median household income
$71,311
±$2,918 (90% margin)
Iowa: $75,059
Median home value
$186,300
±$10,145 (90% margin)
Iowa: $208,000
Median gross rent
$836
±$34 (90% margin)
Iowa: $972
How many people live in Jasper County, and is it growing?
The 2020 Census counted 37,813 residents in Jasper County. The Census Bureau estimates 38,153 for July 1, 2025, up 0.9% since 2020, slower than Iowa (+1.5%). The 2020-2024 American Community Survey puts the population at 37,954 over 730 square miles of land.
| Measure | Jasper County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Total population | 37,954 | 3,210,507 | +983 |
| Households | 15,010±265 | 1,315,707 | +436 |
| Average household size | 2.40±0.04 | 2.36 | no clear change |
| Housing units | 16,249±59 | 1,437,699 | no clear change |
Jasper County's population since 2000
From 37,213 in 2000 to 38,153 in 2025: up 2.5%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Jasper County?
Jasper County holds 14 places: 14 cities, villages and boroughs (incorporated places). The largest is Newton with 15,741 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Newton | 15,760 | $57,771 |
|---|---|---|
| Colfax | 2,255 | $79,318 |
| Monroe | 1,967 | $80,375 |
| Prairie City | 1,700 | $78,295 |
| Baxter | 962 | $60,952 |
| Sully | 881 | $90,189 |
| Kellogg | 606 | $36,944 |
| Lynnville | 380 | $60,682 |
| MingoGEOID 1952815 | 302 | $71,000 |
| Oakland AcresGEOID 1958170 | 176 | $103,000 |
| Lambs GroveGEOID 1942870 | 174 | $93,750 |
| ReasnorGEOID 1965955 | 152 | $69,063 |
| ValeriaGEOID 1980175 | 39 | $63,750 |
| Mitchellville | 2,485 | $81,172 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Jasper County?
The median resident of Jasper County is 41.3 years old; 22.0% are under 18 and 19.8% are 65 or older. The largest group is non-Hispanic white residents at 90.8%, then non-Hispanic residents of two or more races at 3.6%. 2.8% of residents were born outside the United States.
| Measure | Jasper County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.3±0.6 | 38.6 | −0.8 |
| Under 18 years | 22.0% | 22.9% | – |
| 65 years and over | 19.8%±0.1 pts | 18.1% | – |
| Hispanic or Latino (any race) | 3.1% | 7.3% | +0.8 pts |
| White alone, not Hispanic | 90.8%±0.8 pts | 82.3% | −2.7 pts |
| Black or African American alone, not Hispanic | 1.5%±0.3 pts | 3.8% | no clear change |
| Asian alone, not Hispanic | 0.7%±0.2 pts | 2.5% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.1 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.2%±0.3 pts | 0.2% | – |
| Two or more races, not Hispanic | 3.6%±1.0 pts | 3.5% | – |
| Some other race alone, not Hispanic | 0.1%±0.1 pts | 0.3% | – |
| Born outside the United States | 2.8%±0.7 pts | 5.9% | +1.2 pts |
| Speak a language other than English at home (age 5+) | 5.1%±0.8 pts | 9.1% | – |
| Civilian veterans (age 18+) | 7.7%±0.8 pts | 6.5% | – |
| With a disability | 14.0%±1.0 pts | 12.6% | – |
| No health insurance coverage | 4.5%±1.1 pts | 5.0% | +1.5 pts |
| High school graduate or higher (age 25+) | 94.0%±1.0 pts | 93.3% | – |
| Bachelor's degree or higher (age 25+) | 20.0%±1.7 pts | 31.4% | no clear change |
| Graduate or professional degree (age 25+) | 6.5%±1.1 pts | 10.5% | – |
| Moved from another state in the past year | 1.0%±0.3 pts | 2.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Jasper County earn?
Half of Jasper County's 15,010 households earn less than $71,311 a year (±$2,918), against $75,059 in Iowa. In 2015-2019 it was $72,552 in 2024 dollars; the margins of error cannot tell the two periods apart. 8.3% of residents live below the poverty line.
| Measure | Jasper County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $71,311±$2,918 | $75,059 | no clear change |
| Mean household income | $95,279±$5,114 | $98,187 | – |
| Per capita income | $39,394±$1,978 | $40,877 | +$4,191 |
| People below the poverty line | 8.3%±1.2 pts | 11.1% | no clear change |
| Children under 18 below the poverty line | 10.8%±3.1 pts | 12.9% | no clear change |
| Households receiving SNAP | 7.4%±1.5 pts | 8.8% | – |
| Households with a broadband subscription | 90.4%±1.6 pts | 88.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Jasper County?
Owners occupy 72.3% of Jasper County's occupied homes and renters 27.7%. The median owner-occupied home is valued at $186,300 by its owner (±$10,145). The median renter pays $836 a month including utilities, and 33.8% of renters pay 35% or more of their income on rent.
| Measure | Jasper County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $186,300±$10,145 | $208,000 | +$21,141 |
| Median gross rent | $836±$34 | $972 | −$62 |
| Renters paying 35% or more of income on rent | 33.8%±5.6 pts | 35.2% | no clear change |
| Median monthly owner costs, with a mortgage | $1,402±$47 | $1,533 | – |
| Owner-occupied homes | 72.3%±2.5 pts | 71.7% | no clear change |
| Housing units | 16,249±59 | 1,437,699 | no clear change |
| Homeowner vacancy rate | 0.4%±0.3 pts | 0.8% | – |
| Rental vacancy rate | 5.9%±3.2 pts | 5.7% | – |
| Single-family detached homes | 77.1%±2.1 pts | 72.2% | – |
| Mobile homes | 3.0%±1.0 pts | 3.2% | – |
| Built 2020 or later | 0.8%±0.4 pts | 1.7% | – |
| Built 1939 or earlier | 26.8%±2.1 pts | 23.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Jasper County building?
Builders took permits for 80 new housing units across Jasper County in 2025 (30 single-family), 2.1 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Jasper County get to work?
78.0% of Jasper County's workers drive alone and 10.6% work from home. The average trip to work takes 23.3 minutes. The unemployment rate in 2020-2024 averaged 5.7%.
| Measure | Jasper County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 62.1%±1.5 pts | 66.4% | – |
| Unemployment rate | 5.7%±1.2 pts | 3.6% | +1.9 pts |
| Drove alone to work | 78.0%±2.1 pts | 76.0% | – |
| Carpooled | 8.1%±1.5 pts | 7.8% | – |
| Public transportation | 0.0%±0.1 pts | 0.7% | – |
| Walked | 1.9%±0.9 pts | 2.9% | – |
| Worked from home | 10.6%±1.4 pts | 11.3% | +5.7 pts |
| Mean travel time to work | 23.3 min±1.1 | 19.8 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Jasper County's census tracts?
Jasper County is divided into 10 census tracts. Among those with a reliable estimate, median household income runs from $47,262 (Tract 405) to $102,340 (Tract 402).
| Tract 40119099040100 | 3,797±380 | $82,292 |
|---|---|---|
| Tract 40219099040200 | 4,110±287 | $102,340 |
| Tract 40319099040300 | 2,708±280 | $52,357 |
| Tract 40419099040400 | 5,742±554 | $67,891 |
| Tract 40519099040500 | 4,623±559 | $47,262 |
| Tract 40619099040600 | 3,246±440 | $65,385 |
| Tract 40719099040700 | 5,223±369 | $83,750 |
| Tract 40819099040800 | 4,064±330 | $88,646 |
| Tract 40919099040900 | 3,111±220 | $85,200 |
| Tract 980019099980000 | 1,330±113 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Jasper County compare with Iowa's other counties?
| Measure | Rank |
|---|---|
| Population | 17th of 99 |
| Growth 2020-2025 | 22nd of 99 |
| Residents per square mile | 21st of 99 |
| Median household income | 48th of 99 |
| Median home value | 27th of 99 |
| Median gross rent | 45th of 99 |
| Poverty rate | 74th of 99 |
| Bachelor's degree or higher | 75th of 99 |
| Median age | 63rd of 99 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Jasper County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.