Harrison County's 2026 population is estimated at 14,602, reflecting a -0.08% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Harrison County is the 53rd largest county in Iowa. The 2010 population was 14,908 and has grown -2.05% since 2010.
Data after 2023 is projected based on recent change
Overall: 42.1 years
Female: 43.5 years
Male: 41.4 years
There are 11,254 adults, (2,946 of whom are seniors) in Harrison County.
Female: 7,183 (49.1%)
Male: 7,449 (50.9%)
The racial composition of Harrison County includes 94.87% White, and smaller percentages for other race, Asian, Black or African American, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 13,882 | 94.87% |
| Two or more races | 587 | 4.01% |
| Other race | 93 | 0.64% |
| Asian | 43 | 0.29% |
| Black or African American | 18 | 0.12% |
| Native American | 9 | 0.06% |
Harrison County 's average per capita income is $52,513. Household income levels show a median of $79,535. The poverty rate stands at 7.09%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $105,330 | - |
| Families | $96,200 | $110,000 |
| Households | $79,535 | $94,184 |
| Non Families | $45,795 | $56,818 |
Average Income
Median Household Income
Poverty Rate
