Decatur County's estimated 2026 population is 26,638 with a growth rate of 0.23% in the past year according to the most recent United States census data. Decatur County is the 59th largest county in Indiana. The 2010 population was 25,795 and has seen a growth of 3.27% since that time.
Data after 2023 is projected based on recent change
Overall: 39.8 years
Female: 41.2 years
Male: 39.3 years
There are 20,214 adults, (4,797 of whom are seniors) in Decatur County.
Female: 13,184 (49.9%)
Male: 13,238 (50.1%)
The racial composition of Decatur County includes 93.29% White, and smaller percentages for other race, Black or African American, Native American, Asian and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 24,649 | 93.29% |
| Two or more races | 1,217 | 4.61% |
| Other race | 279 | 1.06% |
| Black or African American | 178 | 0.67% |
| Native American | 77 | 0.29% |
| Asian | 22 | 0.08% |
Decatur County's average per capita income is $51,038. Household income levels show a median of $69,783. The poverty rate stands at 10.2%.
Name | Median | Mean |
|---|---|---|
| Married Families | $98,078 | - |
| Families | $88,456 | $110,831 |
| Households | $69,783 | $92,207 |
| Non Families | $37,436 | $48,872 |
Average Income
Median Household Income
Poverty Rate