Lewis County, Tennessee Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 84th-largest in Tennessee
The population of Lewis County, Tennessee is 12,784 as of the 2023 American Community Survey, making it the 84th-largest county in Tennessee. The median household income is $49,477, the median home value is $157,800, and the median age is 42.2.
The population of Lewis County has grown 10.2% since 2010 (12,175 → 13,418), a +0.70% annualized rate.
12,784
Population
+0.70%
Annual growth
45
People / sq mi
$49,477
Median Income
$157,800
Median Home Value
Lewis County covers 282 sq mi of land at 45.3 people per square mile.
About Lewis County, TN
Lewis County is a county in Tennessee with a population of 12,784. It ranks #84 among counties in Tennessee by population. The median age is 42.2, older than the national median. The population is 49.8% male and 50.2% female.
The median household income in Lewis County is $49,477, below the US median of $74,580. 12.9% of residents live below the federal poverty level. Home values sit at a median of $157,800, with monthly rent averaging $735. The homeownership rate of 80.5% is higher than the national rate of 64.8%.
Educational attainment in Lewis County reflects 10.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 6.8% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 35.8 minutes each way.
Lewis County Population History (2010-2024)
The county of Lewis County had a population of 12,175 in 2010 and 13,418 in 2024, a 10.2% growth over 14 years. The peak was 13,418 in 2024. Average annual growth rate: 0.70%.
13,418
Population (2024)
12,175
Population (2010)
13,418
Peak (2024)
0.70%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 12,175 |
| 2011 | 12,151 |
| 2012 | 11,950 |
| 2013 | 12,001 |
| 2014 | 11,893 |
| 2015 | 11,884 |
| 2016 | 11,894 |
| 2017 | 12,028 |
| 2018 | 12,105 |
| 2019 | 12,267 |
| 2020 | 12,607 |
| 2021 | 12,856 |
| 2022 | 12,934 |
| 2023 | 13,146 |
| 2024 | 13,418 |
Race & Ethnicity
| White | 93.3% |
| Black or African American | 0.8% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.9% |
| Two or More Races | 0.0% |
Age & Sex
42.2
Median Age
50.2%
Female
49.8%
Male
20.5%
Age 65+
Age Distribution
Children (under 15): 17.5% · Seniors (65+): 20.5%
Income & Poverty
| Median household income | $49,477$-17,620 vs state |
| Mean household income | $69,487 |
| Per-capita income | $29,149 |
| Poverty rate | 12.9%+3.0% vs state |
| Unemployment rate | 1.9% |
| Employment-to-population | 53.5% |
Top Industries by Employment
The largest employment sector in Lewis County is professional & business services, accounting for 20.7% of workers.
How residents commute
0.0%
Drive alone
0.7%
Carpool
83.5%
Public transit
6.8%
Work from home
35.8 min
Avg commute
Housing
$157,800$-99,000 vs state
Median home value
$735
Median rent
80.5%
Homeownership rate
5,746
Total housing units
89.7%
Occupied
10.3%
Vacant
19.5%
Renter-occupied
Social & access
88.9%
With health insurance
89.1%
With broadband internet
29.0%
Foreign-born
7.8%
Veterans (18+)
18.9%
With a disability
98.1%
Speak language other than English at home
Education
85.4%
High School+
10.9%
Bachelor's+
Largest cities in Tennessee
Other counties in Tennessee
Part of Tennessee
Metro areas in Tennessee
County rankings
Frequently Asked Questions
Lewis County, Tennessee has a population of 12,784 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 84th-largest county in Tennessee. Population density is 45 people per square mile.
The population of Lewis County has grown 10.2% since 2010 (12,175 → 13,418), a +0.70% annualized rate.
The median household income in Lewis County, Tennessee is $49,477, with mean (average) household income of $69,487 and per-capita income of $29,149. 12.9% of residents live below the federal poverty level.
In Lewis County, the largest racial and ethnic groups are White (93.3%), Hispanic or Latino (2.9%), Black or African American (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Lewis County, Tennessee is 42.2 years. Residents are 50.2% female and 49.8% male.
The median home value in Lewis County is $157,800 and median monthly rent is $735. 80.5% of occupied housing units are owner-occupied. The county has 5,746 total housing units, 10.3% of which are vacant.
The largest employment sector in Lewis County, Tennessee is professional, scientific, and management services, employing 20.7% of workers. The unemployment rate is 1.9%.
Nashville-Davidson is among the largest cities associated with Lewis County, Tennessee, with a population of 684,298.
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Full rankings of Tennessee counties
Statewide data for Tennessee
Population, race, income, age, and trends across Tennessee
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.