Jasper County, Iowa Demographics 2026
Jasper County, Iowa has a population of 37,954, the 17th most populous county in Iowa. The median household income is $71,311 and the median home value is $186,300. The poverty rate is 8.3%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Jasper County Quick Facts
How Jasper County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 37,864 | 37,954 | +0.2% |
| Median household income | $70,128 | $71,311 | +1.7% |
| Median home value | $176,800 | $186,300 | +5.4% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 31 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Jasper County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Newton | 15,700 | $57,771 | 11.1% | $153,700 |
| Colfax | 2,210 | $79,318 | 9.1% | $178,000 |
| Monroe | 2,120 | $80,375 | 8.1% | $177,200 |
| Prairie City | 1,711 | $78,295 | 3.5% | $190,600 |
| Baxter | 1,247 | $60,952 | 14.7% | $166,700 |
| Sully | 1,022 | $90,189 | 3.7% | $173,700 |
| Kellogg | 676 | $36,944 | 25.3% | $115,800 |
| Lynnville | 527 | $60,682 | 3.4% | $146,300 |
| Mingo | 328 | $71,000 | 3.0% | $144,300 |
| Oakland Acres | 191 | $103,000 | 5.2% | $256,300 |
| Lambs Grove | 181 | $93,750 | 0.0% | $200,000 |
| Reasnor | 152 | $69,063 | 4.6% | $89,200 |
| Valeria | 43 | $63,750 | 0.0% | $150,000 |
Explore Iowa Rankings
Population Overview
Jasper County is located in Iowa with a total population of 37,954. It is the 17th most populous county out of 99 in Iowa. The county encompasses 13 Census-designated places.
Age Demographics
The median age in Jasper County is 41.3 years. This is 7% higher than the state median of 38.6 years.
Economy, Income & Housing
The median household income in Jasper County is $71,311. This is 5% lower than the state median of $75,059. It is also 12% lower than the national median of $80,734. The poverty rate stands at 8.3%. This is 25% lower than the state poverty rate of 11.1%. The unemployment rate is 5.7%. This is 59% higher than the state rate of 3.6%. The median home value is $186,300. Housing costs are 10% lower than the state median of $208,000. With a home-value-to-income ratio of just 2.6x, Jasper County is one of the most affordable housing markets in the area. 72.4% of occupied housing units are owner-occupied.
Race & Ethnicity
Jasper County has a predominantly White (non-Hispanic) population, comprising 90.8% of all residents. Hispanic or Latino residents account for 3.1%. The Black or African American population (1.5%) is well below the state average of 3.8%. The Hispanic or Latino population (3.1%) is well below the state average of 7.3%. The Asian population (0.7%) is well below the state average of 2.5%.
Education
20.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 36% lower than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.0%.
Data Sources & Methodology
All figures for Jasper County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Iowa and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Jasper County, Iowa?
Jasper County has a population of 37,954, making it the 17th most populous county in Iowa.
What is the median income in Jasper County?
The median household income in Jasper County is $71,311 with a poverty rate of 8.3%.
How many cities are in Jasper County, Iowa?
Jasper County contains 13 Census-designated places.