In 2019, Decatur County, KS had a population of 2.86k people with a median age of 50.6 and a median household income of $48,125. Between 2018 and 2019 the population of Decatur County, KS declined from 2,881 to 2,860, a −0.729% decrease and its median household income grew from $44,104 to $48,125, a 9.12% increase.
The 5 largest ethnic groups in Decatur County, KS are White (Non-Hispanic) (95.3%), White (Hispanic) (2.55%), Black or African American (Non-Hispanic) (0.524%), American Indian & Alaska Native (Non-Hispanic) (0.455%), and Asian (Non-Hispanic) (0.385%). 0% of the households in Decatur County, KS speak a non-English language at home as their primary language.
97.6% of the residents in Decatur County, KS are U.S. citizens.
In 2019, the median property value in Decatur County, KS was $67,900, and the homeownership rate was 73.7%. Most people in Decatur County, KS drove alone to work, and the average commute time was 14.3 minutes. The average car ownership in Decatur County, KS was 2 cars per household.
Decatur County, KS borders Norton County, KS, Rawlins County, KS, Sheridan County, KS, Thomas County, KS, Furnas County, NE, and Red Willow County, NE.