DeKalb County's estimated 2025 population is 21,671 with a growth rate of 1.04% in the past year according to the most recent United States census data. DeKalb County is the 65th largest county in Tennessee. The 2010 population was 18,694 and has seen a growth of 15.92% since that time.
Data after 2023 is projected based on recent change
The racial composition of DeKalb County includes 88.78% White, 4.31% other race, and smaller percentages for Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Other race
Two or more races
Black or African American
Asian
Native American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 18,246 | 88.78% |
| Other race | 886 | 4.31% |
| Two or more races | 786 | 3.82% |
| Black or African American | 377 | 1.83% |
| Asian | 167 | 0.81% |
| Native American | 89 | 0.43% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
DeKalb County's average per capita income is $38,483. Household income levels show a median of $48,484. The poverty rate stands at 21.41%.
Name | Median | Mean |
|---|---|---|
| Married Families | $75,807 | - |
| Families | $63,622 | $79,956 |
| Households | $48,484 | $66,814 |
| Non Families | $27,261 | $40,582 |
Average Income
Median Household Income
Poverty Rate