Hamilton County, Tennessee
Located in Tennessee, Hamilton County has a population of 376,192 residents and a median age of 39.5 years, making it the #199 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.1%. The median home value is $312,800, and the median household income is $76,183, which is 1% above the national median.
Demographics
Hamilton County has a population of 376,192, making it the #199 most populous county in the US. The median age is 39.5 years, which is 1.5% 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 Hamilton County is $76,183, ranking #768 out of 3,222 counties — 1.4% above the national median. The poverty rate is 13.1% and unemployment stands at 4.4%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Hamilton County is $312,800 (+11.0% vs national). Renters pay a median of $1,253/mo and the homeownership rate is 63.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Hamilton County, 37.5% of adults age 25+ hold a bachelor's degree or higher, which is 11.2% above the national average, ranking #364 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Hamilton County is 75.6 years. 17.7% of adults report poor or fair health and 10.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
18.2% of adults in Hamilton County smoke , 33.3% are obese , and 19.5% report excessive drinking. The drug overdose death rate is 44.2 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Hamilton County is 9.5 per 100,000 and the suicide rate is 13.1 per 100,000. Motor vehicle deaths occur at a rate of 11.9 per 100,000.
Homicide Rate Trend
Families & Children
19.0% of children in Hamilton County live in poverty and the infant mortality rate is 6.8 per 1,000 live births. The teen birth rate is 20.2 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Hamilton County is 61.3%. The mean commute time is 24.2 min, which is 12.3% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Hamilton County voted Republican with a margin of 13.0%. The vote was 42.7% Dem / 55.7% Rep. Compared to 2020, the margin shifted 3.3 toward Republicans .
Vote Share Over Time
About Hamilton County, Tennessee
Hamilton County, Tennessee has a total population of 376,192, making it the 199th most populous county in the United States. The median age in Hamilton County is 39.5 years, which is 1.5% above the national median of 38.9 years.
The median household income in Hamilton County is $76,183, which ranks #768 of 3,222 counties nationwide. This is 1.4% above the national median of $75,149. The poverty rate is 13.1%, higher than the national rate of 12.6%. The unemployment rate stands at 4.4%.
The median home value in Hamilton County is $312,800, 11.0% above the national median. Renters in Hamilton County pay a median gross rent of $1,253 per month. The homeownership rate is 63.9%, compared to the national rate of 64.4%.
In Hamilton County, 37.5% of residents aged 25 and older hold a bachelor's degree or higher, 11.2% above the national average of 33.7%. Health insurance coverage stands at 90.3% of the population. The average commute time for workers is 24.2 min.
Hamilton County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 68.3% of the population, followed by Black (non-Hispanic) (16.9%) and Hispanic or Latino (8.0%).
All data for Hamilton County, Tennessee 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.