Johnson County, Missouri
Located in Missouri, Johnson County has a population of 54,732 residents and a median age of 31.5 years, making it the #951 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 11.8%. The median home value is $235,700, and the median household income is $67,272, which is 10% below the national median.
Demographics
Johnson County has a population of 54,732, making it the #951 most populous county in the US. The median age is 31.5 years, which is 19.0% below the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Johnson County is $67,272, ranking #1,406 out of 3,222 counties — 10.5% below the national median. The poverty rate is 11.8% and unemployment stands at 4.2%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Johnson County is $235,700 (-16.4% vs national). Renters pay a median of $932/mo and the homeownership rate is 63.5%.
Median Home Value Trend
Rankings →Household Type
Education
In Johnson County, 29.1% of adults age 25+ hold a bachelor's degree or higher, which is 13.6% below the national average, ranking #830 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Johnson County is 75.5 years. 17.5% of adults report poor or fair health and 10.5% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
17.8% of adults in Johnson County smoke , 40.0% are obese , and 20.2% report excessive drinking. The drug overdose death rate is 11.7 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Johnson County is 3.7 per 100,000 and the suicide rate is 18.1 per 100,000. Motor vehicle deaths occur at a rate of 17.7 per 100,000.
Homicide Rate Trend
Families & Children
13.2% of children in Johnson County live in poverty and the infant mortality rate is 4.1 per 1,000 live births. The teen birth rate is 13.2 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Johnson County is 55.7%. The mean commute time is 25.8 min, which is 6.4% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Johnson County voted Republican with a margin of 39.6%. The vote was 29.5% Dem / 69.1% Rep. Compared to 2020, the margin shifted 2.8 toward Republicans .
Vote Share Over Time
About Johnson County, Missouri
Johnson County, Missouri has a total population of 54,732, making it the 951st most populous county in the United States. The median age in Johnson County is 31.5 years, which is 19.0% below the national median of 38.9 years.
The median household income in Johnson County is $67,272, which ranks #1,406 of 3,222 counties nationwide. This is 10.5% below the national median of $75,149. The poverty rate is 11.8%, lower than the national rate of 12.6%. The unemployment rate stands at 4.2%.
The median home value in Johnson County is $235,700, 16.4% below the national median. Renters in Johnson County pay a median gross rent of $932 per month. The homeownership rate is 63.5%, compared to the national rate of 64.4%.
In Johnson County, 29.1% of residents aged 25 and older hold a bachelor's degree or higher, 13.6% below the national average of 33.7%. Health insurance coverage stands at 91.5% of the population. The average commute time for workers is 25.8 min.
Johnson County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 83.7% of the population, followed by Hispanic or Latino (5.2%) and Two or More Races (4.3%).
All data for Johnson County, Missouri comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.