Marshall County, Kentucky
Located in Kentucky, Marshall County has a population of 31,743 residents and a median age of 45.1 years, making it the #1,427 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 12.3%. The median home value is $173,800, and the median household income is $65,831, which is 12% below the national median.
Demographics
Marshall County has a population of 31,743, making it the #1,427 most populous county in the US. The median age is 45.1 years, which is 15.9% 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 Marshall County is $65,831, ranking #1,562 out of 3,222 counties — 12.4% below the national median. The poverty rate is 12.3% and unemployment stands at 4.5%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Marshall County is $173,800 (-38.3% vs national). Renters pay a median of $798/mo and the homeownership rate is 81.6%.
Median Home Value Trend
Rankings →Household Type
Education
In Marshall County, 21.2% of adults age 25+ hold a bachelor's degree or higher, which is 37.0% below the national average, ranking #1,783 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Marshall County is 74.8 years. 20.4% of adults report poor or fair health and 6.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
19.0% of adults in Marshall County smoke , 38.5% are obese , and 16.5% report excessive drinking. The drug overdose death rate is 15.8 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 15.3 per 100,000. Motor vehicle deaths occur at a rate of 23.2 per 100,000.
Suicide Rate Trend
Families & Children
17.3% of children in Marshall County live in poverty . The teen birth rate is 20.9 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Marshall County is 70.9%. The mean commute time is 25.9 min, which is 6.2% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Marshall County voted Republican with a margin of 56.7%. The vote was 21% Dem / 77.7% Rep. Compared to 2020, the margin shifted 4.3 toward Republicans .
Vote Share Over Time
About Marshall County, Kentucky
Marshall County, Kentucky has a total population of 31,743, making it the 1,427th most populous county in the United States. The median age in Marshall County is 45.1 years, which is 15.9% above the national median of 38.9 years.
The median household income in Marshall County is $65,831, which ranks #1,562 of 3,222 counties nationwide. This is 12.4% below the national median of $75,149. The poverty rate is 12.3%, lower than the national rate of 12.6%. The unemployment rate stands at 4.5%.
The median home value in Marshall County is $173,800, 38.3% below the national median. Renters in Marshall County pay a median gross rent of $798 per month. The homeownership rate is 81.6%, compared to the national rate of 64.4%.
In Marshall County, 21.2% of residents aged 25 and older hold a bachelor's degree or higher, 37.0% below the national average of 33.7%. Health insurance coverage stands at 91.9% of the population. The average commute time for workers is 25.9 min.
Marshall County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 95.4% of the population, followed by Hispanic or Latino (2.0%) and Two or More Races (1.5%).
All data for Marshall 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.