Grundy County Flag

Grundy County

State:
Illinois
County Seat:
Morris

Grundy County's estimated 2025 population is 54,436 with a growth rate of 0.79% in the past year according to the most recent United States census data. Grundy County is the 24th largest county in Illinois. The 2010 population was 50,155 and has seen a growth of 8.54% since that time.

54,436
Total Population
130
Population Density (miĀ²)
24
Population Rank (State)
429 0.79%
Annual Population Growth

Grundy County Population

Grundy County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Grundy County includes 88.38% White, and smaller percentages for other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White46,77288.38%
Two or more races3,3066.25%
Other race1,4432.73%
Black or African American1,1272.13%
Asian2310.44%
Native American410.08%
Native Hawaiian or Pacific Islander00%

Grundy County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Grundy County's average per capita income is $59,106. Household income levels show a median of $93,060. The poverty rate stands at 6.3%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$117,762-
Families$109,922$129,321
Households$93,060$111,929
Non Families$54,411$69,809

$59,106

Average Income

$93,060

Median Household Income

6.3%

Poverty Rate