In 2019, Osage County, KS had a population of 15.9k people with a median age of 43.8 and a median household income of $54,090. Between 2018 and 2019 the population of Osage County, KS declined from 15,882 to 15,881, a −0.0063% decrease and its median household income declined from $55,036 to $54,090, a −1.72% decrease.
The 5 largest ethnic groups in Osage County, KS are White (Non-Hispanic) (93.2%), White (Hispanic) (2.71%), Two+ (Non-Hispanic) (2.58%), Black or African American (Non-Hispanic) (0.592%), and Two+ (Hispanic) (0.384%). 0% of the households in Osage County, KS speak a non-English language at home as their primary language, and 99.8% of the residents in Osage County, KS are U.S. citizens.
In 2019, the median property value in Osage County, KS was $115,700, and the homeownership rate was 74.7%. Most people in Osage County, KS drove alone to work, and the average commute time was 28.8 minutes. The average car ownership in Osage County, KS was 2 cars per household.