Doniphan County's 2026 population is estimated at 7,665, reflecting a 0.59% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Doniphan County is the 50th largest county in Kansas. The 2010 population was 7,959 and has grown -3.69% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.1 years
Female: 42.1 years
Male: 39.4 years
There are 5,920 adults, (1,513 of whom are seniors) in Doniphan County.
Female: 3,748 (50%)
Male: 3,755 (50%)
The racial composition of Doniphan County includes 89.99% White, 3.28% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 6,752 | 89.99% |
| Two or more races | 428 | 5.7% |
| Black or African American | 246 | 3.28% |
| Other race | 32 | 0.43% |
| Native American | 25 | 0.33% |
| Native Hawaiian or Pacific Islander | 12 | 0.16% |
| Asian | 8 | 0.11% |
Doniphan County 's average per capita income is $47,726. Household income levels show a median of $74,028. The poverty rate stands at 9.65%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $104,047 | - |
| Families | $92,524 | $104,736 |
| Households | $74,028 | $89,700 |
| Non Families | $32,440 | $48,388 |
Average Income
Median Household Income
Poverty Rate
