Harper County, Oklahoma Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 75th-largest in Oklahoma
The population of Harper County, Oklahoma is 3,231 as of the 2023 American Community Survey, making it the 75th-largest county in Oklahoma. The median household income is $59,191, the median home value is $99,300, and the median age is 41.3.
The population of Harper County has declined 13.2% since 2010 (3,695 → 3,209), a -1.00% annualized rate.
3,231
Population
-1.00%
Annual growth
3
People / sq mi
$59,191
Median Income
$99,300
Median Home Value
Harper County covers 1,039 sq mi of land at 3.1 people per square mile.
About Harper County, OK
Harper County is a county in Oklahoma with a population of 3,231. It ranks #75 among counties in Oklahoma by population. The median age is 41.3, older than the national median. The population is 49.5% male and 50.5% female.
The median household income in Harper County is $59,191, below the US median of $74,580. 10.8% of residents live below the federal poverty level. Home values sit at a median of $99,300, with monthly rent averaging $791. The homeownership rate of 80.3% is higher than the national rate of 64.8%.
Educational attainment in Harper County reflects 26.6% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 2.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 17.8 minutes each way.
Harper County Population History (2010-2024)
The county of Harper County had a population of 3,695 in 2010 and 3,209 in 2024, a -13.2% growth over 14 years. The peak was 3,894 in 2014. Average annual growth rate: -0.94%.
3,209
Population (2024)
3,695
Population (2010)
3,894
Peak (2014)
-0.94%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 3,695 |
| 2011 | 3,713 |
| 2012 | 3,711 |
| 2013 | 3,869 |
| 2014 | 3,894 |
| 2015 | 3,825 |
| 2016 | 3,787 |
| 2017 | 3,799 |
| 2018 | 3,746 |
| 2019 | 3,707 |
| 2020 | 3,248 |
| 2021 | 3,175 |
| 2022 | 3,176 |
| 2023 | 3,207 |
| 2024 | 3,209 |
Race & Ethnicity
| White | 76.5% |
| Black or African American | 0.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.9% |
| Two or More Races | 0.0% |
Age & Sex
41.3
Median Age
50.5%
Female
49.5%
Male
20.4%
Age 65+
Age Distribution
Children (under 15): 19.7% · Seniors (65+): 20.4%
Income & Poverty
| Median household income | $59,191$-4,412 vs state |
| Mean household income | $69,291 |
| Per-capita income | $27,360 |
| Poverty rate | 10.8%-0.3% vs state |
| Unemployment rate | 1.3% |
| Employment-to-population | 57.3% |
Top Industries by Employment
The largest employment sector in Harper County is agriculture, accounting for 23.7% of workers.
How residents commute
0.0%
Drive alone
1.4%
Carpool
89.0%
Public transit
2.2%
Work from home
17.8 min
Avg commute
Housing
$99,300$-86,600 vs state
Median home value
$791
Median rent
80.3%
Homeownership rate
1,714
Total housing units
73.2%
Occupied
26.8%
Vacant
19.7%
Renter-occupied
Social & access
85.9%
With health insurance
90.3%
With broadband internet
32.1%
Foreign-born
7.8%
Veterans (18+)
16.8%
With a disability
78.0%
Speak language other than English at home
Education
87.6%
High School+
26.6%
Bachelor's+
Largest cities in Oklahoma
Other counties in Oklahoma
Part of Oklahoma
Metro areas in Oklahoma
County rankings
Frequently Asked Questions
Harper County, Oklahoma has a population of 3,231 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 75th-largest county in Oklahoma. Population density is 3 people per square mile.
The population of Harper County has declined 13.2% since 2010 (3,695 → 3,209), a -1.00% annualized rate.
The median household income in Harper County, Oklahoma is $59,191, with mean (average) household income of $69,291 and per-capita income of $27,360. 10.8% of residents live below the federal poverty level.
In Harper County, the largest racial and ethnic groups are White (76.5%), Hispanic or Latino (3.9%), Black or African American (0.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Harper County, Oklahoma is 41.3 years. Residents are 50.5% female and 49.5% male.
The median home value in Harper County is $99,300 and median monthly rent is $791. 80.3% of occupied housing units are owner-occupied. The county has 1,714 total housing units, 26.8% of which are vacant.
The largest employment sector in Harper County, Oklahoma is agriculture, forestry, fishing, and mining, employing 23.7% of workers. The unemployment rate is 1.3%.
Oklahoma City is among the largest cities associated with Harper County, Oklahoma, with a population of 688,693.
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Full rankings of Oklahoma counties
Statewide data for Oklahoma
Population, race, income, age, and trends across Oklahoma
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.