In 2021, Grundy County, IL had a population of 52.4k people with a median age of 38.3 and a median household income of $81,764. Between 2020 and 2021 the population of Grundy County, IL grew from 50,798 to 52,364, a 3.08% increase and its median household income grew from $75,767 to $81,764, a 7.92% increase.
The 5 largest ethnic groups in Grundy County, IL are White (Non-Hispanic) (84.9%), White (Hispanic) (6.71%), Two+ (Non-Hispanic) (2.14%), Other (Hispanic) (1.97%), and Two+ (Hispanic) (1.82%).
None of the households in Grundy County, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
98.2% of the residents in Grundy County, IL are U.S. citizens.
In 2021, the median property value in Grundy County, IL was $212,300, and the homeownership rate was 74%.
Most people in Grundy County, IL drove alone to work, and the average commute time was 28.8 minutes. The average car ownership in Grundy County, IL was 2 cars per household.
Grundy County, IL borders Kankakee County, IL, Kendall County, IL, LaSalle County, IL, Livingston County, IL, and Will County, IL.