• county
  • FIPS 19099
  • Largest town: Newton

Jasper County, Iowa

Jasper County had 38,107 residents in the Census Vintage 2024 estimate, on 730.4 square miles of land. It ranks 17th of 99 in Iowa by population and 8th by land area.

Population
38,107
#17 of 99 in Iowa · #1,233 in US
Area
730.4 sq mi
#8 of 99 in Iowa · #1,212 in US
Density
52 / sq mi
#21 of 99 in Iowa · #1,424 in US
Median household income
$72,394
#36 of 99 in Iowa · #825 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Jasper County within Iowa. Pin: Des Moines.

Measure from here

Tools and pages that start from Jasper County

Jasper County population, land area and income

Jasper County had 38,107 residents in the Census Vintage 2024 estimate, on 730.4 square miles of land. It ranks 17th of 99 in Iowa by population and 8th by land area. That works out to 52.2 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Iowa has 15,008 residents, so Jasper County is 2.5 times that size.

Its SAIPE 2023 median household income of $72,394 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

38,107

3144th1st

1233rd of 3,144 (US)

Land area

730 sq mi

3144th1st

1212th of 3,144 (US)

Density

52.2 / sq mi

3144th1st

1424th of 3,144 (US)

Median household income

$72,394

3143rd1st

825th of 3,143 (US)

Rank within Iowa (99)

Population

38,107

99th1st

17th of 99 (IA)

Land area

730 sq mi

99th1st

8th of 99 (IA)

Density

52.2 / sq mi

99th1st

21st of 99 (IA)

Median household income

$72,394

99th1st

36th of 99 (IA)

How Jasper County's population changed since 2020

Jasper County gained 289 residents between the July 2020 and July 2024 estimates, a rise of 0.8%. That ranks 27th of 99 in Iowa for growth. The median Iowa county changed by -0.6%, and the state as a whole by +1.6%.

Since the April 2020 estimates base, Jasper County recorded 1,616 births and 1,846 deaths, a natural change of -230. Net international migration added +440 and net domestic migration, people moving to or from other US counties, came to +82. The largest single component was international migration, which added 440 people.

37.8k202037.9k202138.0k202238.0k202338.1k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
1,616
Deaths
1,846
Net international migration
+440
Net domestic migration
+82
Change, July 2023 to July 2024
+116

Where Jasper County is

The Census internal point of Jasper County is at 41.685600, -93.054100. It sits in UTM zone 15N. The map shades Iowa's 99 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Jasper County outlined. Dots are towns of 1,000+ people with residents in it.

Monroe County: -2.9%Worth County: -1.7%Buena Vista County: +0.0%Jasper County: +0.8%Van Buren County: -0.0%Hardin County: -2.2%Ida County: -3.1%Marshall County: +0.8%Fayette County: -1.5%Ringgold County: -0.8%Wapello County: +1.0%Webster County: -0.2%Adams County: -2.8%Buchanan County: +0.6%Cerro Gordo County: -1.2%Lucas County: +1.6%Emmet County: -1.9%Floyd County: -3.8%Crawford County: -0.7%Linn County: +0.6%Montgomery County: -2.6%Polk County: +4.7%Cherokee County: +0.0%Bremer County: +1.3%Grundy County: +0.5%Adair County: -0.8%Cedar County: -1.4%Story County: +3.9%Mahaska County: -0.6%Davis County: +0.9%Clay County: +0.8%Johnson County: +4.6%Greene County: -1.0%Palo Alto County: -2.0%Benton County: +1.0%Cass County: -0.7%Wright County: -1.5%Audubon County: -2.1%Henry County: -5.3%Boone County: +0.1%Appanoose County: -1.4%Washington County: +0.4%Chickasaw County: -2.2%Poweshiek County: -0.9%Osceola County: -2.6%Wayne County: +1.8%Mitchell County: +0.4%Jefferson County: +0.5%Union County: -1.4%Butler County: -1.2%Hancock County: -1.3%Marion County: +1.9%Delaware County: +0.9%Humboldt County: +0.2%Sioux County: +1.8%Des Moines County: -1.1%O'Brien County: +0.8%Clayton County: -0.6%Black Hawk County: +1.0%Winnebago County: -2.6%Harrison County: +0.4%Decatur County: -1.0%Pocahontas County: -0.9%Lyon County: +3.8%Iowa County: -1.4%Franklin County: +0.3%Dickinson County: +2.2%Madison County: +3.2%Allamakee County: +0.8%Jones County: +2.2%Carroll County: -1.6%Kossuth County: -2.6%Hamilton County: -1.0%Howard County: -1.4%Page County: -1.1%Guthrie County: +1.5%Tama County: -1.8%Monona County: -3.6%Clarke County: -2.1%Lee County: -3.4%Mills County: +2.1%Sac County: -2.7%Scott County: +0.6%Keokuk County: -1.6%Jackson County: -0.3%Warren County: +7.1%Calhoun County: -1.9%Shelby County: +0.8%Fremont County: -1.1%Dubuque County: -0.1%Louisa County: -1.8%Taylor County: -0.6%Woodbury County: +1.2%Clinton County: -0.9%Winneshiek County: -1.6%Pottawattamie County: -0.1%Plymouth County: +0.5%Muscatine County: -2.4%Dallas County: +14.7%
Change 2020 to 2024
  1. < -1.9%
  2. < -1.0%
  3. < +0.0%
  4. < +0.9%
  5. ≥ +0.9%
no data

Orange pin: Jasper County internal point. Dark pin: Des Moines.

Internal point

Decimal
41.685600, -93.054100
DMS
41°41'8.16"N 93°03'14.76"W
UTM
15N 495497.6E 4614871.1N
Geohash
9zmv4s8h4
Plus code
86H8MWPW+69

Towns in Jasper County

5 incorporated places of 1,000+ people have residents in Jasper County, 21,786 people together, or 57% of the county. Each figure counts only the part of the town inside Jasper County; towns marked "part" extend into another county. The largest is Newton with 15,709.

  1. 01Newton15,709
  2. 02Colfax2,305
  3. 03Monroe2,021
  4. 04Prairie City1,722
  5. 05Mitchellville (part)29
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Jasper County

The Census 2024 county adjacency file lists 7 neighbors for Jasper County. The most populous is Polk County, IA, with 516,185 residents. Distances run between Census internal points in a straight line.

Distance to Des Moines and the nearest big city

Des Moines is 29.1 miles WSW of Jasper County's internal point in a straight line. The nearest place of 100,000 or more is Des Moines, IA (population 213,096), 29.8 miles away. The nearest place of 10,000 or more is Newton, IA (population 15,709), 1.0 miles away.

Jasper County FIPS code

The FIPS code of Jasper County is 19099: state code 19 for Iowa plus county code 099. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $72,394.

Questions people ask

What is the population of Jasper County, Iowa?

The Census Vintage 2024 estimate for July 1, 2024 is 38,107. That is up 289 people (0.8%) from the July 2020 estimate of 37,818.

What is the FIPS code of Jasper County?

19099. The first two digits (19) are Iowa; the last three (099) identify the county.

What is the largest town in Jasper County?

Newton, with 15,709 residents inside Jasper County in 2024.

Which counties border Jasper County?

7 county-equivalents border it in the Census 2024 adjacency file: Polk County, IA; Story County, IA; Marshall County, IA; Marion County, IA; Mahaska County, IA; Poweshiek County, IA; Tama County, IA.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.