Grainger County's estimated 2026 population is 25,825 with a growth rate of 1.48% in the past year according to the most recent United States census data. Grainger County is the 59th largest county in Tennessee. The 2010 population was 22,718 and has seen a growth of 13.68% since that time.
Data after 2023 is projected based on recent change
The racial composition of Grainger County includes 96.03% White, and smaller percentages for Two or more races, Black or African American, Native Hawaiian or Pacific Islander, Native American, other race, Asian and multiracial populations.
White (96.03%)
Two or more races (1.92%)
Black or African American (1.12%)
Native Hawaiian or Pacific Islander (0.47%)
Native American (0.17%)
Other race (0.15%)
Asian (0.14%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 22,978 | 96.03% |
| Two or more races | 460 | 1.92% |
| Black or African American | 269 | 1.12% |
| Native Hawaiian or Pacific Islander | 112 | 0.47% |
| Native American | 41 | 0.17% |
| Other race | 35 | 0.15% |
| Asian | 34 | 0.14% |
Married
Widowed
Divorced
Separated
Never Married
Grainger County's average per capita income is $36,963. Household income levels show a median of $51,351. The poverty rate stands at 16.36%.
Name | Median | Mean |
|---|---|---|
| Married Families | $77,969 | - |
| Families | $66,264 | $85,095 |
| Households | $51,351 | $68,952 |
| Non Families | $22,990 | $32,508 |
Average Income
Median Household Income
Poverty Rate
