In 2019, Ottawa, KS had a population of 12.3k people with a median age of 35.5 and a median household income of $46,808. Between 2018 and 2019 the population of Ottawa, KS declined from 12,275 to 12,260, a −0.122% decrease and its median household income declined from $47,334 to $46,808, a −1.11% decrease.
The 5 largest ethnic groups in Ottawa, KS are White (Non-Hispanic) (88.2%), Two+ (Non-Hispanic) (3.8%), White (Hispanic) (3.16%), Black or African American (Non-Hispanic) (1.44%), and Other (Hispanic) (1.25%). 0% of the households in Ottawa, KS speak a non-English language at home as their primary language, and 99.1% of the residents in Ottawa, KS are U.S. citizens.
In 2019, the median property value in Ottawa, KS was $109,000, and the homeownership rate was 59.6%. Most people in Ottawa, KS drove alone to work, and the average commute time was 19.2 minutes. The average car ownership in Ottawa, KS was 2 cars per household.