Lewis County, Tennessee
Located in Tennessee, Lewis County has a population of 12,992 residents and a median age of 41.9 years, making it the #2,284 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 16.7%. The median home value is $173,400, and the median household income is $56,285, which is 25% below the national median.
Demographics
Lewis County has a population of 12,992, making it the #2,284 most populous county in the US. The median age is 41.9 years, which is 7.7% 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 Lewis County is $56,285, ranking #2,392 out of 3,222 counties — 25.1% below the national median. The poverty rate is 16.7% and unemployment stands at 3.7%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Lewis County is $173,400 (-38.5% vs national). Renters pay a median of $708/mo and the homeownership rate is 81.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Lewis County, 10.3% of adults age 25+ hold a bachelor's degree or higher, which is 69.5% below the national average, ranking #3,172 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Lewis County is 71.5 years. 26.4% of adults report poor or fair health and 14.4% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
26.8% of adults in Lewis County smoke , 39.0% are obese , and 17.6% report excessive drinking. The drug overdose death rate is 65.5 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 20.1 per 100,000. Motor vehicle deaths occur at a rate of 28.9 per 100,000.
Suicide Rate Trend
Families & Children
21.4% of children in Lewis County live in poverty . The teen birth rate is 37.2 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Lewis County is 60.0%. The mean commute time is 37.0 min, which is 34.2% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Lewis County voted Republican with a margin of 65.6%. The vote was 16.8% Dem / 82.4% Rep. Compared to 2020, the margin shifted 4.9 toward Republicans .
Vote Share Over Time
About Lewis County, Tennessee
Lewis County, Tennessee has a total population of 12,992, making it the 2,284th most populous county in the United States. The median age in Lewis County is 41.9 years, which is 7.7% above the national median of 38.9 years.
The median household income in Lewis County is $56,285, which ranks #2,392 of 3,222 counties nationwide. This is 25.1% below the national median of $75,149. The poverty rate is 16.7%, higher than the national rate of 12.6%. The unemployment rate stands at 3.7%.
The median home value in Lewis County is $173,400, 38.5% below the national median. Renters in Lewis County pay a median gross rent of $708 per month. The homeownership rate is 81.9%, compared to the national rate of 64.4%.
In Lewis County, 10.3% of residents aged 25 and older hold a bachelor's degree or higher, 69.5% below the national average of 33.7%. Health insurance coverage stands at 85.7% of the population. The average commute time for workers is 37.0 min.
Lewis County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 91.4% of the population, followed by Two or More Races (4.7%) and Hispanic or Latino (3.2%).
All data for Lewis 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.