Allen County's 2026 population is estimated at 22,553, reflecting a 1.16% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Allen County is the 52nd largest county in Kentucky. The 2010 population was 20,023 and has grown 12.64% since 2010.
Data after 2023 is projected based on recent change
Overall: 40.7 years
Female: 40.9 years
Male: 40.5 years
There are 16,379 adults, (3,807 of whom are seniors) in Allen County.
Female: 10,769 (50.6%)
Male: 10,524 (49.4%)
The racial composition of Allen County includes 94.07% White, and smaller percentages for other race, Black or African American, Native American, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 20,030 | 94.07% |
| Two or more races | 949 | 4.46% |
| Other race | 179 | 0.84% |
| Black or African American | 100 | 0.47% |
| Native American | 32 | 0.15% |
| Asian | 3 | 0.01% |
Allen County 's average per capita income is $40,315. Household income levels show a median of $61,403. The poverty rate stands at 13.45%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $90,315 | - |
| Families | $76,581 | $92,293 |
| Households | $61,403 | $77,597 |
| Non Families | $27,354 | $38,173 |
Average Income
Median Household Income
Poverty Rate