In 2019, Harper County, OK had a population of 3.76k people with a median age of 39.7 and a median household income of $46,154. Between 2018 and 2019 the population of Harper County, OK declined from 3,847 to 3,760, a −2.26% decrease and its median household income declined from $50,114 to $46,154, a −7.9% decrease.
The 5 largest ethnic groups in Harper County, OK are White (Non-Hispanic) (75.8%), White (Hispanic) (16.5%), Other (Hispanic) (5.43%), Two+ (Non-Hispanic) (1.46%), and American Indian & Alaska Native (Non-Hispanic) (0.372%). 0% of the households in Harper County, OK speak a non-English language at home as their primary language, and 90% of the residents in Harper County, OK are U.S. citizens.
In 2019, the median property value in Harper County, OK was $77,200, and the homeownership rate was 78.4%. Most people in Harper County, OK drove alone to work, and the average commute time was 19.1 minutes. The average car ownership in Harper County, OK was 3 cars per household.