In 2019, Hamilton County, KS had a population of 2.59k people with a median age of 35.8 and a median household income of $46,944. Between 2018 and 2019 the population of Hamilton County, KS declined from 2,616 to 2,591, a −0.956% decrease and its median household income grew from $45,000 to $46,944, a 4.32% increase.
The 5 largest ethnic groups in Hamilton County, KS are White (Non-Hispanic) (64.5%), White (Hispanic) (26.4%), Black or African American (Hispanic) (3.47%), Other (Hispanic) (3.05%), and Black or African American (Non-Hispanic) (1.85%). 0% of the households in Hamilton County, KS speak a non-English language at home as their primary language, and 87.6% of the residents in Hamilton County, KS are U.S. citizens.
In 2019, the median property value in Hamilton County, KS was $81,800, and the homeownership rate was 71.7%. Most people in Hamilton County, KS drove alone to work, and the average commute time was 14.3 minutes. The average car ownership in Hamilton County, KS was 2 cars per household.