County in Tennessee · 435 sq mi · 43 people per sq mi
18,776 people live in Polk County. The typical household earns $62,522, and the median resident is 46.9 years old.
2026 projection
From 17,558 in 2020
Poverty rate 13.95%
Men 46.7 · Women 47.1
1840–2026
18,776
2026 projection
6.9% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1840–2026
18,776
2026 projection
6.9% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 18,776 | +184 | 0.99% |
|---|---|---|---|
| 2025 | 18,592 | +184 | 1.00% |
| 2024 | 18,408 | +344 | 1.90% |
| 2023 | 18,064 | +288 | 1.62% |
| 2022 | 17,776 | +72 | 0.41% |
| 2021 | 17,704 | +146 | 0.83% |
| 2020 | 17,558 | +794 | 4.74% |
| 2019 | 16,764 | -116 | 0.69% |
| 2018 | 16,880 | +111 | 0.66% |
| 2017 | 16,769 | -18 | 0.11% |
Showing 10 of 33 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 179 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 7 residents
53% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 53% | 53% | 54% |
| Never married | 24% | 29% | 19% |
| Divorced | 14% | 13% | 16% |
| Widowed | 7% | 4% | 9% |
| Separated | 2% | 1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
8 sources, all from the U.S. Census Bureau