Grundy County, Missouri Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Grundy County, MO Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
-
C
Health Below average
-
D
Income Well below average
-
D
Education Well below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | Grundy County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Population | 9,787 | 6,186,340 | 337,468,954 |
| Population density (per sq mi) | 22.4 | 88.8 | 86.4 |
| Population growth (%/yr) | -0.55% | 0.28% | 0.59% |
| Median age | 41.2 | 37.5 | 37.3 |
| Households | 3,907 | 2,507,647 | 130,235,071 |
Population in Grundy County declined by 3.0% from 2009 to 2024, reaching 9,787 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Grundy County is Boomers, aged 61–79, at 20.6% of residents. That is 2.7 points above Missouri as a whole.
- Gen Z 13–28 1,869 19.1% -2.1 pts
- Millennials 29–44 1,697 17.3% -3.9 pts
- Gen X 45–60 1,844 18.8% -0.8 pts
- Boomers 61–79 2,015 20.6% +2.7 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 Missouri, 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 51.7% of the people living in Grundy County and men 48.3%.
- Women 51.7% Missouri 50.7%
- Men 48.3% Missouri 49.3%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Grundy County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Grundy County has a the economy index of D, which means it is barely prosperous.
| Metric | Grundy County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Median household income | $52,818 | $70,801 | $80,455 |
| Income growth (%/yr) | 3.49% | 4.56% | 4.80% |
| Unemployment rate | 3.2% | 4.0% | 5.2% |
The median household income in Grundy County is about 25% lower than in Missouri.
Housing
| Metric | Grundy County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Median home price | $28,804 | $145,462 | $248,835 |
| Median rent | $695 | $1,033 | $1,407 |
| Homeownership rate | 69.7% | 68.1% | 65.2% |
The median home price in Grundy County is about 3.5 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $695 per month for that long.
Commute Time & Mobility
Commuters in Grundy County spend about 27 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 113 hours, about 4.7 full days, spent commuting.
| Metric | Grundy County | Missouri Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 13.6 | 21.0 | 22.4 |
| Round-trip commute (min) | 27.1 | 41.9 | 44.8 |
| Yearly time spent (hours) | 113 | 175 | 187 |
| Estimated yearly cost | $3,507 | $5,415 | $5,790 |
| Work from home | 5.3% | 13.0% | 15.0% |
| Highway traffic (vehicles/day) | — | 7,545 | 8,813 |
| Local road traffic (vehicles/day) | 396 | 923 | 1,355 |
Fastest commutes among counties in
Missouri:
Saline County (11.9 min), Adair County (12.0 min), Nodaway County (12.1 min).
Slowest:
Bollinger County (33.1 min), Ray County (32.2 min), Maries County (31.9 min).
The average commute time in Grundy County is 14 minutes, shorter than the 21 minutes in Missouri.
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
Grundy County has a education index of D, which means it is barely educated.
| Metric | Grundy County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 14.3% | 28.8% | 31.6% |
| Average household size | 2.43 | 2.40 | 2.53 |
Highest education index among counties in
Missouri:
St. Louis County (0.4), Platte County (0.4), Boone County (0.4).
Lowest:
Bollinger County (0.2), Wayne County (0.2), Ripley County (0.2).
Health
Grundy County has a health index of C, which means it is somewhat healthy.
| Metric | Grundy County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 78.2 | 76.9 | 78.3 |
| Self-rated poor health | 18.9% | 19.0% | 16.3% |
| Smokers | 22.1% | 22.8% | 19.0% |
Highest health index among counties in
Missouri:
St. Charles County (0.8), Platte County (0.8), Boone County (0.8).
Lowest:
Scotland County (0.7), Ripley County (0.7), Pemiscot County (0.8).
Frequently Asked Questions
Common questions about Grundy County, Missouri.
How big is Grundy County, Missouri by population?
About 9,787 people live in Grundy County, Missouri, in 3,907 households of 2.4 people on average. The median age is 41.2, so residents are older than the U.S. median of 37.3 by about 4 years.
How densely populated is Grundy County, Missouri?
Averaged over its land area, Grundy County, Missouri has 22 people per square mile, a density typical of rural areas. That is about 26% of the U.S. average of 86.
Is Grundy County, Missouri an affordable place to live?
The median home costs 0.5 times the median household income ($28,804 against $52,818), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $695 a month takes about 16% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is it hard to find a job in Grundy County, Missouri?
Unemployment in Grundy County, Missouri is only 3.2%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
How educated are people in Grundy County, Missouri?
14.3% of adults in Grundy County, Missouri hold a bachelor's degree or higher (about 1 in 7), well below the U.S. share of 31.6%.
Analyze any area in the US
Get local demographics for any address, aggregated by drive time or radius, on the interactive map.
Explore the map →