In 2019, Martin County, KY had a population of 11.6k people with a median age of 39.5 and a median household income of $41,013. Between 2018 and 2019 the population of Martin County, KY declined from 11,919 to 11,648, a −2.27% decrease and its median household income grew from $35,125 to $41,013, a 16.8% increase.
The 5 largest ethnic groups in Martin County, KY are White (Non-Hispanic) (92.3%), Black or African American (Non-Hispanic) (5.07%), White (Hispanic) (0.755%), Two+ (Hispanic) (0.446%), and Black or African American (Hispanic) (0.395%). 0% of the households in Martin County, KY speak a non-English language at home as their primary language, and 99.8% of the residents in Martin County, KY are U.S. citizens.
In 2019, the median property value in Martin County, KY was $84,300, and the homeownership rate was 70.5%. Most people in Martin County, KY drove alone to work, and the average commute time was 34 minutes. The average car ownership in Martin County, KY was 2 cars per household.