Johnson County, Missouri Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Johnson 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.
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B
Health Around average
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C
Income Below averageWealthier than 70% of counties in Missouri
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C
Education Below averageBetter educated than 89% of counties in Missouri
Source: Map AI Methodology
Population: density and quick facts
| Metric | Johnson County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Population | 54,730 | 6,186,340 | 337,468,954 |
| Population density (per sq mi) | 65.7 | 88.8 | 86.4 |
| Population growth (%/yr) | 0.10% | 0.28% | 0.59% |
| Median age | 32.3 | 37.5 | 37.3 |
| Households | 21,087 | 2,507,647 | 130,235,071 |
Population in Johnson County grew by 5.1% from 2009 to 2024, reaching 54,730 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Johnson County is Gen Z, aged 13–28, at 31.7% of residents. That is 10.5 points above Missouri as a whole.
- Gen Z 13–28 17,358 31.7% +10.5 pts
- Millennials 29–44 10,701 19.6% -1.7 pts
- Gen X 45–60 9,058 16.6% -3.1 pts
- Boomers 61–79 7,078 12.9% -5.0 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 48.8% of the people living in Johnson County and men 51.2%.
- Women 48.8% Missouri 50.7%
- Men 51.2% Missouri 49.3%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Johnson County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Johnson County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Johnson County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Median household income | $67,212 | $70,801 | $80,455 |
| Income growth (%/yr) | 4.07% | 4.56% | 4.80% |
| Unemployment rate | 4.2% | 4.0% | 5.2% |
The median household income in Johnson County is about 5% lower than in Missouri.
Housing
| Metric | Johnson County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Median home price | $213,334 | $145,462 | $248,835 |
| Median rent | $932 | $1,033 | $1,407 |
| Homeownership rate | 63.5% | 68.1% | 65.2% |
The median home price in Johnson County is about 19.1 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $932 per month for that long.
Commute Time & Mobility
Commuters in Johnson County spend about 36 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 148 hours, about 6.2 full days, spent commuting.
| Metric | Johnson County | Missouri Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 17.8 | 21.0 | 22.4 |
| Round-trip commute (min) | 35.5 | 41.9 | 44.8 |
| Yearly time spent (hours) | 148 | 175 | 187 |
| Estimated yearly cost | $4,589 | $5,415 | $5,790 |
| Work from home | 7.0% | 13.0% | 15.0% |
| Highway traffic (vehicles/day) | 7,818 | 7,545 | 8,813 |
| Local road traffic (vehicles/day) | 766 | 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 Johnson County is 18 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
Johnson County has a education index of C, which means it is somewhat educated.
| Metric | Johnson County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 23.0% | 28.8% | 31.6% |
| Average household size | 2.41 | 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
Johnson County has a health index of B, which means it is quite healthy.
| Metric | Johnson County | Missouri Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 77.7 | 76.9 | 78.3 |
| Self-rated poor health | 13.7% | 19.0% | 16.3% |
| Smokers | 18.7% | 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).
Johnson County, MO Compared With Nearby Counties
Johnson County, MO is the 3rd largest of the 6 counties compared here, 54,730 residents against a local median of 43,397. The measure that sets Johnson County, MO apart most is median home price: $213,334, 47% above the local median of $144,791.
Commute tells the same story from another angle: 17.8 min against a local median of 22.0 min, 19% below it. The one measure here that carries a verdict is commute, and at 19% below the local median it puts Johnson County, MO at the better end of the local range. The counties themselves spread $69,407 on median home price, so Johnson County, MO sits at one end of an already wide local range rather than apart from it. Johnson County, MO has the highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Johnson County, MO | 54,730 | $67,212 #4/6 | $213,334 #1/6 | 17.8 min #3/6 |
| Lafayette County, MO | 33,096 | $80,512 | $150,171 | 23.2 min |
| Henry County, MO | 22,328 | $57,861 | $162,215 | 15.3 min |
| Pettis County, MO | 43,397 | $60,475 | $144,791 | 15.8 min |
| Cass County, MO | 110,772 | $88,254 | $92,808 | 26.8 min |
| Jackson County, MO | 719,648 | $68,888 | $119,553 | 22.0 min |
Frequently Asked Questions
Common questions about Johnson County, Missouri.
How big is Johnson County, Missouri by population?
About 54,730 people live in Johnson County, Missouri, in 21,087 households of 2.4 people on average. The median age is 32.3, so residents are younger than the U.S. median of 37.3 by about 5 years.
How densely populated is Johnson County, Missouri?
Averaged over its land area, Johnson County, Missouri has 66 people per square mile, a density typical of rural areas. That is close to the U.S. average of 86.
Can a typical household afford a home in Johnson County, Missouri?
The median home costs 3.2 times the median household income ($213,334 against $67,212), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $932 a month takes about 17% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How educated are people in Johnson County, Missouri?
23.0% of adults in Johnson County, Missouri hold a bachelor's degree or higher (about 1 in 4), well below the U.S. share of 31.6%.
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