Jasper County, Iowa Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Jasper County, IA Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
-
B
Health Around average
-
C
Income Below average
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D
Education Well below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | Jasper County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Population | 37,954 | 3,204,793 | 337,468,954 |
| Population density (per sq mi) | 51.8 | 57.0 | 86.4 |
| Population growth (%/yr) | 0.42% | 0.41% | 0.59% |
| Median age | 42.0 | 36.8 | 37.3 |
| Households | 15,010 | 1,308,457 | 130,235,071 |
Population in Jasper County grew by 3.7% from 2009 to 2024, reaching 37,954 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Jasper County is Gen X, aged 45–60, at 20.7% of residents. That is 1.8 points above Iowa as a whole.
- Gen Z 13–28 7,271 19.2% -3.1 pts
- Millennials 29–44 7,843 20.7% +0.2 pts
- Gen X 45–60 7,867 20.7% +1.8 pts
- Boomers 61–79 7,280 19.2% +1.5 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Iowa, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 48.2% of the people living in Jasper County and men 51.8%.
- Women 48.2% Iowa 50.0%
- Men 51.8% Iowa 50.0%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Jasper County
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Economy
Jasper County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Jasper County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Median household income | $70,936 | $75,133 | $80,455 |
| Income growth (%/yr) | 3.38% | 3.99% | 4.80% |
| Unemployment rate | 5.7% | 3.6% | 5.2% |
The median household income in Jasper County is about 6% lower than in Iowa.
Housing
| Metric | Jasper County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Median home price | $219,047 | $153,425 | $248,835 |
| Median rent | $836 | $971 | $1,407 |
| Homeownership rate | 72.3% | 71.7% | 65.2% |
The median home price in Jasper County is about 21.8 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $836 per month for that long.
Commute Time & Mobility
Commuters in Jasper County spend about 43 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 179 hours, about 7.5 full days, spent commuting.
| Metric | Jasper County | Iowa Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 21.5 | 17.0 | 22.4 |
| Round-trip commute (min) | 43.0 | 33.9 | 44.8 |
| Yearly time spent (hours) | 179 | 141 | 187 |
| Estimated yearly cost | $5,548 | $4,382 | $5,790 |
| Work from home | 10.6% | 11.3% | 15.0% |
| Highway traffic (vehicles/day) | 5,006 | 4,993 | 8,813 |
| Local road traffic (vehicles/day) | 349 | 606 | 1,355 |
Fastest commutes among counties in
Iowa:
Sioux County (10.1 min), Union County (10.4 min), Cass County (10.6 min).
Slowest:
Monroe County (30.4 min), Madison County (30.1 min), Mills County (26.7 min).
The average commute time in Jasper County is 21 minutes, longer than the 17 minutes in Iowa.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Jasper County has a education index of D, which means it is barely educated.
| Metric | Jasper County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 18.6% | 27.9% | 31.6% |
| Average household size | 2.40 | 2.37 | 2.53 |
Highest education index among counties in
Iowa:
Johnson County (0.4), Dallas County (0.4), Story County (0.4).
Lowest:
Crawford County (0.2), Wayne County (0.2), Louisa County (0.2).
Health
Jasper County has a health index of B, which means it is quite healthy.
| Metric | Jasper County | Iowa Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.0 | 79.2 | 78.3 |
| Self-rated poor health | 13.0% | 13.6% | 16.3% |
| Smokers | 18.4% | 17.6% | 19.0% |
Highest health index among counties in
Iowa:
Johnson County (0.8), Story County (0.8), Winneshiek County (0.8).
Lowest:
Davis County (0.8), Wayne County (0.8), Appanoose County (0.8).
Jasper County, IA Compared With Nearby Counties
Jasper County, IA is the 4th largest of the 5 counties compared here, 37,954 residents against a local median of 70,290. Where Jasper County, IA breaks from the counties next to it is commute, sitting 40% above the local median of 15.4 min at 21.5 min. That is the weaker end of the local range on this measure.
Median home price tells the same story from another angle: $219,047 against a local median of $189,961, 15% above it. The counties themselves spread 5.3 min on commute, so Jasper County, IA sits at one end of an already wide local range rather than apart from it. Jasper County, IA has the 5th lowest commute of the 5 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Jasper County, IA | 37,954 | $70,936 #4/5 | $219,047 #2/5 | 21.5 min #5/5 |
| Marshall County, IA | 40,114 | $73,385 | $122,261 | 13.2 min |
| Marion County, IA | 33,642 | $79,418 | $184,905 | 15.5 min |
| Polk County, IA | 502,972 | $83,877 | $195,018 | 18.5 min |
| Story County, IA | 100,466 | $70,594 | $260,937 | 15.2 min |
Frequently Asked Questions
Common questions about Jasper County, Iowa.
How big is Jasper County, Iowa by population?
About 37,954 people live in Jasper County, Iowa, in 15,010 households of 2.4 people on average. The median age is 42.0, so residents are older than the U.S. median of 37.3 by about 5 years.
Is Jasper County, Iowa mostly urban or rural?
Averaged over its land area, Jasper County, Iowa has 52 people per square mile, a density typical of rural areas. That is about 60% of the U.S. average of 86.
Is Jasper County, Iowa an affordable place to live?
The median home costs 3.1 times the median household income ($219,047 against $70,936), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $836 a month takes about 14% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How educated are people in Jasper County, Iowa?
18.6% of adults in Jasper County, Iowa hold a bachelor's degree or higher (about 1 in 5), well below the U.S. share of 31.6%.
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