In 2019, Harper County, KS had a population of 5.59k people with a median age of 42.4 and a median household income of $49,865. Between 2018 and 2019 the population of Harper County, KS declined from 5,673 to 5,594, a −1.39% decrease and its median household income grew from $49,455 to $49,865, a 0.829% increase.
The 5 largest ethnic groups in Harper County, KS are White (Non-Hispanic) (90.2%), White (Hispanic) (5.6%), Two+ (Non-Hispanic) (1.68%), American Indian & Alaska Native (Non-Hispanic) (1.32%), and Asian (Non-Hispanic) (0.393%). 0% of the households in Harper County, KS speak a non-English language at home as their primary language.
98.7% of the residents in Harper County, KS are U.S. citizens.
In 2019, the median property value in Harper County, KS was $74,300, and the homeownership rate was 69.6%. Most people in Harper County, KS drove alone to work, and the average commute time was 16 minutes. The average car ownership in Harper County, KS was 2 cars per household.