In 2019, Riley County, KS had a population of 75.1k people with a median age of 25.1 and a median household income of $51,208. Between 2018 and 2019 the population of Riley County, KS declined from 75,296 to 75,056, a −0.319% decrease and its median household income grew from $49,910 to $51,208, a 2.6% increase.
The 5 largest ethnic groups in Riley County, KS are White (Non-Hispanic) (76.5%), Black or African American (Non-Hispanic) (6.09%), White (Hispanic) (5.79%), Asian (Non-Hispanic) (4.91%), and Two+ (Non-Hispanic) (3.57%). 0% of the households in Riley County, KS speak a non-English language at home as their primary language, and 94.5% of the residents in Riley County, KS are U.S. citizens.
In 2019, the median property value in Riley County, KS was $201,000, and the homeownership rate was 43.2%. Most people in Riley County, KS drove alone to work, and the average commute time was 13.8 minutes. The average car ownership in Riley County, KS was 2 cars per household.