In 2018, Grundy County, IL had a population of 50.5k people with a median age of 37.6 and a median household income of $74,140. Between 2017 and 2018 the population of Grundy County, IL grew from 50,333 to 50,509, a 0.35% increase and its median household income grew from $71,598 to $74,140, a 3.55% increase.
The 5 largest ethnic groups in Grundy County, IL are White (Non-Hispanic) (86.5%), White (Hispanic) (7.16%), Other (Hispanic) (1.94%), Two+ (Non-Hispanic) (1.32%), and Black or African American (Non-Hispanic) (1.21%). NaNk% of the people in Grundy County, IL speak a non-English language, and 98.8% are U.S. citizens.
The median property value in Grundy County, IL is $191,300, and the homeownership rate is 71.1%. Most people in Grundy County, IL commute by Drove Alone, and the average commute time is 28.1 minutes. The average car ownership in Grundy County, IL is 2 cars per household.