Allen County's 2026 population is estimated at 407,623, reflecting a 1.03% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Allen County is the 3rd largest county in Indiana. The 2010 population was 355,956 and has grown 14.51% since 2010.
Data after 2023 is projected based on recent change
Overall: 36.2 years
Female: 37.1 years
Male: 35.1 years
There are 292,748 adults, (61,278 of whom are seniors) in Allen County.
Female: 199,256 (50.8%)
Male: 193,122 (49.2%)
The racial composition of Allen County includes 71.2% White, 10.6% Black or African American, 5.31% Asian, 3.78% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 279,390 | 71.2% |
| Black or African American | 41,585 | 10.6% |
| Two or more races | 33,285 | 8.48% |
| Asian | 20,833 | 5.31% |
| Other race | 14,813 | 3.78% |
| Native American | 2,233 | 0.57% |
| Native Hawaiian or Pacific Islander | 239 | 0.06% |
Allen County 's average per capita income is $48,396. Household income levels show a median of $70,737. The poverty rate stands at 12.51%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $103,644 | $128,452 |
| Families | $88,274 | $110,471 |
| Households | $70,737 | $93,579 |
| Non Families | $43,918 | $61,558 |
Average Income
Median Household Income
Poverty Rate