Lewis County's estimated 2025 population is 13,374 with a growth rate of 1.16% in the past year according to the most recent United States census data. Lewis County is the 84th largest county in Tennessee. The 2010 population was 12,175 and has seen a growth of 9.85% since that time.
Data after 2023 is projected based on recent change
The racial composition of Lewis County includes 93.3% White, and smaller percentages for Asian, Black or African American, other race and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 11,927 | 93.3% |
| Two or more races | 598 | 4.68% |
| Asian | 106 | 0.83% |
| Black or African American | 100 | 0.78% |
| Other race | 53 | 0.41% |
Married
Widowed
Divorced
Separated
Never Married
Lewis County's average per capita income is $42,019. Household income levels show a median of $49,477. The poverty rate stands at 15.88%.
Name | Median | Mean |
|---|---|---|
| Married Families | $82,813 | - |
| Families | $70,610 | $87,083 |
| Households | $49,477 | $69,487 |
| Non Families | $26,927 | $32,899 |
Average Income
Median Household Income
Poverty Rate
