Harper County's 2026 population is estimated at 3,213, reflecting a 0.06% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Harper County is the 75th largest county in Oklahoma. The 2010 population was 3,695 and has grown -13.04% since 2010.
Data after 2023 is projected based on recent change
Overall: 40.9 years
Female: 38.8 years
Male: 42.1 years
There are 2,440 adults, (641 of whom are seniors) in Harper County.
Female: 1,649 (51.5%)
Male: 1,554 (48.5%)
The racial composition of Harper County includes 73.21% White, 18.89% other race, and smaller percentages for Native American, Black or African American, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 2,345 | 73.21% |
| Other race | 605 | 18.89% |
| Two or more races | 204 | 6.37% |
| Native American | 45 | 1.4% |
| Black or African American | 2 | 0.06% |
| Asian | 2 | 0.06% |
Harper County 's average per capita income is $42,407. Household income levels show a median of $64,053. The poverty rate stands at 13.12%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $74,236 | - |
| Families | $73,198 | $82,782 |
| Households | $64,053 | $76,094 |
| Non Families | $28,125 | $57,014 |
Average Income
Median Household Income
Poverty Rate
