DeKalb County's 2026 population is estimated at 44,636, reflecting a 0.34% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). DeKalb County is the 35th largest county in Indiana. The 2010 population was 42,335 and has grown 5.44% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.4 years
Female: 39.3 years
Male: 37.6 years
There are 33,254 adults, (7,630 of whom are seniors) in DeKalb County.
Female: 21,966 (50.1%)
Male: 21,841 (49.9%)
The racial composition of DeKalb County includes 94.75% White, and smaller percentages for Asian, other race, Black or African American, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 41,507 | 94.75% |
| Two or more races | 1,780 | 4.06% |
| Asian | 241 | 0.55% |
| Other race | 209 | 0.48% |
| Black or African American | 46 | 0.11% |
| Native American | 24 | 0.05% |
DeKalb County 's average per capita income is $47,790. Household income levels show a median of $74,331. The poverty rate stands at 9.52%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $94,933 | - |
| Families | $87,278 | $102,351 |
| Households | $74,331 | $88,977 |
| Non Families | $40,015 | $53,286 |
Average Income
Median Household Income
Poverty Rate
