Grundy County's 2026 population is estimated at 14,460, reflecting a 1.09% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Grundy County is the 81st largest county in Tennessee. The 2010 population was 13,725 and has grown 5.36% since 2010.
Data after 2023 is projected based on recent change
Overall: 42.7 years
Female: 43.9 years
Male: 42.4 years
There are 10,842 adults, (2,862 of whom are seniors) in Grundy County.
Female: 6,900 (49.9%)
Male: 6,919 (50.1%)
The racial composition of Grundy County includes 93.8% White, and smaller percentages for Asian, Black or African American, Native American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 12,962 | 93.8% |
| Two or more races | 672 | 4.86% |
| Asian | 105 | 0.76% |
| Black or African American | 62 | 0.45% |
| Native American | 16 | 0.12% |
| Other race | 2 | 0.01% |
Grundy County 's average per capita income is $32,394. Household income levels show a median of $47,593. The poverty rate stands at 18.87%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $59,257 | - |
| Families | $53,512 | $71,770 |
| Households | $47,593 | $62,286 |
| Non Families | $33,318 | $39,766 |
Average Income
Median Household Income
Poverty Rate
