In 2017, Greene County, IL had a population of 13.3k people with a median age of 42.7 and a median household income of $44,502. Between 2016 and 2017 the population of Greene County, IL declined from 13,390 to 13,311, a -0.59% decrease and its median household income grew from $42,880 to $44,502, a 3.78% increase.
The population of Greene County, IL is 96.7% White Alone, 1.28% Black or African American Alone, and 1.18% Two or More Races. N/A% of the people in Greene County, IL speak a non-English language, and 99.9% are U.S. citizens.
The median property value in Greene County, IL is $76,900, and the homeownership rate is 78.2%. Most people in Greene County, IL commute by Drove Alone, and the average commute time is 26.1 minutes. The average car ownership in Greene County, IL is 2 cars per household.