Johnson County, Kentucky
Located in Kentucky, Johnson County has a population of 22,334 residents and a median age of 42.0 years, making it the #1,759 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 22.8%. The median home value is $120,200, and the median household income is $44,904, which is 40% below the national median.
Demographics
Johnson County has a population of 22,334, making it the #1,759 most populous county in the US. The median age is 42.0 years, which is 8.0% above 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 $44,904, ranking #2,966 out of 3,222 counties — 40.2% below the national median. The poverty rate is 22.8% 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 $120,200 (-57.4% vs national). Renters pay a median of $708/mo and the homeownership rate is 68.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Johnson County, 16.8% of adults age 25+ hold a bachelor's degree or higher, which is 50.3% below the national average, ranking #2,544 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Johnson County is 69.4 years. 29.0% of adults report poor or fair health and 6.7% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
26.9% of adults in Johnson County smoke , 42.4% are obese , and 14.3% report excessive drinking. The drug overdose death rate is 35.9 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Johnson County is 9.6 per 100,000 and the suicide rate is 14.1 per 100,000. Motor vehicle deaths occur at a rate of 21.7 per 100,000.
Homicide Rate Trend
Families & Children
28.3% of children in Johnson County live in poverty . The teen birth rate is 25.4 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Johnson County is 59.0%. The mean commute time is 25.6 min, which is 7.3% 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 70.7%. The vote was 14% Dem / 84.7% Rep. Compared to 2020, the margin shifted 3.6 toward Republicans .
Vote Share Over Time
About Johnson County, Kentucky
Johnson County, Kentucky has a total population of 22,334, making it the 1,759th most populous county in the United States. The median age in Johnson County is 42.0 years, which is 8.0% above the national median of 38.9 years.
The median household income in Johnson County is $44,904, which ranks #2,966 of 3,222 counties nationwide. This is 40.2% below the national median of $75,149. The poverty rate is 22.8%, higher than the national rate of 12.6%. The unemployment rate stands at 4.2%.
The median home value in Johnson County is $120,200, 57.4% below the national median. Renters in Johnson County pay a median gross rent of $708 per month. The homeownership rate is 68.3%, compared to the national rate of 64.4%.
In Johnson County, 16.8% of residents aged 25 and older hold a bachelor's degree or higher, 50.3% below the national average of 33.7%. Health insurance coverage stands at 93.6% of the population. The average commute time for workers is 25.6 min.
Johnson County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 93.9% of the population, followed by Two or More Races (3.5%) and Asian (non-Hispanic) (1.4%).
All data for Johnson County, Kentucky 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.