Smith County, Tennessee
Located in Tennessee, Smith County has a population of 20,389 residents and a median age of 40.6 years, making it the #1,858 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 10.0%. The median home value is $243,800, and the median household income is $66,293, which is 12% below the national median.
Demographics
Smith County has a population of 20,389, making it the #1,858 most populous county in the US. The median age is 40.6 years, which is 4.4% 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 Smith County is $66,293, ranking #1,498 out of 3,222 counties — 11.8% below the national median. The poverty rate is 10.0% and unemployment stands at 2.7%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Smith County is $243,800 (-13.5% vs national). Renters pay a median of $922/mo and the homeownership rate is 76.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Smith County, 18.5% of adults age 25+ hold a bachelor's degree or higher, which is 45.2% below the national average, ranking #2,268 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Smith County is 72.0 years. 20.2% of adults report poor or fair health and 11.9% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
20.6% of adults in Smith County smoke , 36.9% are obese , and 19.0% report excessive drinking. The drug overdose death rate is 57.4 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 23.9 per 100,000. Motor vehicle deaths occur at a rate of 24.3 per 100,000.
Suicide Rate Trend
Families & Children
16.5% of children in Smith County live in poverty . The teen birth rate is 19.5 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Smith County is 59.7%. The mean commute time is 33.9 min, which is 22.8% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Smith County voted Republican with a margin of 64.9%. The vote was 17.1% Dem / 82% Rep. Compared to 2020, the margin shifted 6.0 toward Republicans .
Vote Share Over Time
About Smith County, Tennessee
Smith County, Tennessee has a total population of 20,389, making it the 1,858th most populous county in the United States. The median age in Smith County is 40.6 years, which is 4.4% above the national median of 38.9 years.
The median household income in Smith County is $66,293, which ranks #1,498 of 3,222 counties nationwide. This is 11.8% below the national median of $75,149. The poverty rate is 10.0%, lower than the national rate of 12.6%. The unemployment rate stands at 2.7%.
The median home value in Smith County is $243,800, 13.5% below the national median. Renters in Smith County pay a median gross rent of $922 per month. The homeownership rate is 76.9%, compared to the national rate of 64.4%.
In Smith County, 18.5% of residents aged 25 and older hold a bachelor's degree or higher, 45.2% below the national average of 33.7%. Health insurance coverage stands at 91.7% of the population. The average commute time for workers is 33.9 min.
Smith County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 90.0% of the population, followed by Two or More Races (4.3%) and Hispanic or Latino (3.1%).
All data for Smith 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.