In 2019, Ottawa County, KS had a population of 5.82k people with a median age of 43 and a median household income of $54,784. Between 2018 and 2019 the population of Ottawa County, KS declined from 5,902 to 5,822, a −1.36% decrease and its median household income grew from $51,971 to $54,784, a 5.41% increase.
The 5 largest ethnic groups in Ottawa County, KS are White (Non-Hispanic) (94.1%), White (Hispanic) (2.1%), Two+ (Non-Hispanic) (1.03%), Black or African American (Non-Hispanic) (0.979%), and Asian (Non-Hispanic) (0.618%). 0% of the households in Ottawa County, KS speak a non-English language at home as their primary language.
99.4% of the residents in Ottawa County, KS are U.S. citizens.
In 2019, the median property value in Ottawa County, KS was $105,700, and the homeownership rate was 79.6%. Most people in Ottawa County, KS drove alone to work, and the average commute time was 21.4 minutes. The average car ownership in Ottawa County, KS was 2 cars per household.