In 2019, Jefferson County, KY had a population of 767k people with a median age of 38.5 and a median household income of $59,049. Between 2018 and 2019 the population of Jefferson County, KY declined from 770,517 to 766,757, a −0.488% decrease and its median household income grew from $55,851 to $59,049, a 5.73% increase.
The 5 largest ethnic groups in Jefferson County, KY are White (Non-Hispanic) (66.5%), Black or African American (Non-Hispanic) (22%), White (Hispanic) (4.8%), Asian (Non-Hispanic) (2.96%), and Two+ (Non-Hispanic) (2.22%). 0% of the households in Jefferson County, KY speak a non-English language at home as their primary language.
95% of the residents in Jefferson County, KY are U.S. citizens.
The largest universities in Jefferson County, KY are University of Louisville (5,324 degrees awarded in 2020), Jefferson Community and Technical College (4,731 degrees), and Sullivan University (1,096 degrees).
In 2019, the median property value in Jefferson County, KY was $185,700, and the homeownership rate was 61.1%. Most people in Jefferson County, KY drove alone to work, and the average commute time was 21.3 minutes. The average car ownership in Jefferson County, KY was 2 cars per household.