In 2019, Grundy County, IL had a population of 50.7k people with a median age of 37.9 and a median household income of $77,350. Between 2018 and 2019 the population of Grundy County, IL grew from 50,509 to 50,666, a 0.311% increase and its median household income grew from $74,140 to $77,350, a 4.33% increase.
The 5 largest ethnic groups in Grundy County, IL are White (Non-Hispanic) (86.3%), White (Hispanic) (7.02%), Other (Hispanic) (2.28%), Two+ (Non-Hispanic) (1.46%), and Black or African American (Non-Hispanic) (1.16%). 0% of the households in Grundy County, IL speak a non-English language at home as their primary language.
98.3% of the residents in Grundy County, IL are U.S. citizens.
In 2019, the median property value in Grundy County, IL was $199,300, and the homeownership rate was 71.3%. Most people in Grundy County, IL drove alone to work, and the average commute time was 28.1 minutes. The average car ownership in Grundy County, IL was 2 cars per household.