In 2017, Grundy County, IL had a population of 50.3k people with a median age of 37.5 and a median household income of $71,598. Between 2016 and 2017 the population of Grundy County, IL declined from 50,338 to 50,333, a -0.00993% decrease and its median household income grew from $67,162 to $71,598, a 6.6% increase.
The 5 largest ethnic groups in Grundy County, IL are White (Non-Hispanic) (87.1%), White (Hispanic) (6.93%), Some Other Race (Hispanic) (1.91%), Black or African American (Non-Hispanic) (1.31%), and Two or More Races (Non-Hispanic) (1.17%). N/A% of the people in Grundy County, IL speak a non-English language, and 99% are U.S. citizens.
The median property value in Grundy County, IL is $188,300, and the homeownership rate is 72.1%. Most people in Grundy County, IL commute by Drove Alone, and the average commute time is 27.6 minutes. The average car ownership in Grundy County, IL is 2 cars per household.