Polk County's estimated 2026 population is 18,776 with a growth rate of 0.99% in the past year according to the most recent United States census data. Polk County is the 71st largest county in Tennessee. The 2010 population was 16,813 and has seen a growth of 11.68% since that time.
Data after 2023 is projected based on recent change
Overall: 46.9 years
Female: 47.1 years
Male: 46.7 years
There are 14,542 adults, (3,764 of whom are seniors) in Polk County.
Female: 8,856 (49.5%)
Male: 9,042 (50.5%)
The racial composition of Polk County includes 89.57% White, and smaller percentages for other race, Black or African American, Asian, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 16,032 | 89.57% |
| Two or more races | 1,505 | 8.41% |
| Other race | 160 | 0.89% |
| Black or African American | 142 | 0.79% |
| Asian | 53 | 0.3% |
| Native American | 6 | 0.03% |
Polk County's average per capita income is $45,797. Household income levels show a median of $62,522. The poverty rate stands at 13.95%.
Name | Median | Mean |
|---|---|---|
| Married Families | $90,436 | - |
| Families | $82,344 | $105,893 |
| Households | $62,522 | $84,888 |
| Non Families | $27,767 | $44,584 |
Average Income
Median Household Income
Poverty Rate
