US Census Data

Grundy County, Illinois

12 cities & places have their primary county here.

Population
52,920
+4.4%’19–’23
Median household income
$93,060
+20.3%’19–’23
Median home value
$259,200
+30.1%’19–’23

Grundy County is a county in Illinois with a population of 52,920. 12 cities and places have their primary county here. Its median household income of $93,060 runs above the Illinois figure of $81,702.

From 2019 to 2023, Grundy County's population grew 4.4% from 50,666 to 52,920, while its median household income rose 20.3% from $77,350 to $93,060.

The median resident is 38.6 years old. The largest age group is 5 to 17, 18.9% of residents.

Demographics

ACS 2019–2023
Population
52,920
Median age
38.6 yrs
Median household income
$93,060
Median home value
$259,200
Median gross rent
$1,137
Housing units
21,324
Homeownership rate
75.8%
Bachelor's degree or higher
24.2%
Unemployment rate
4.5%

Trends

ACS 5-year · 2019–2023
Population
50,66652,920
Median household income
$77,350$93,060
Median home value
$199,300$259,200
Median gross rent
$999$1,137
YearPopulationMedian household incomeMedian home valueMedian gross rent
201950,666$77,350$199,300$999
202050,798$75,767$199,800$987
202152,364$81,764$212,300$1,060
202252,624$89,993$245,400$1,126
202352,920$93,060$259,200$1,137

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

CountShare
Under 53,0815.8%
5 to 179,99118.9%
18 to 244,6308.7%
25 to 346,26611.8%
35 to 447,22013.6%
45 to 547,07013.4%
55 to 646,93513.1%
65 to 744,7288.9%
75 and over2,9995.7%

Race & ethnicity

CountShare
White (non-Hispanic)44,09683.3%
Black or African American1,1232.1%
American Indian & Alaska Native370.1%
Asian2310.4%
Native Hawaiian & Pacific Islander00.0%
Some other race480.1%
Two or more races1,3042.5%
Hispanic or Latino (any race)6,08111.5%

Educational attainment (age 25+)

CountShare
No high school diploma2,0455.8%
High school graduate11,96334.0%
Some college or associate's12,67936.0%
Bachelor's degree5,74216.3%
Graduate or professional degree2,7897.9%

Commute to work

Mean travel time to work
28 min

How workers get to work

CountShare
Drove alone22,29283.8%
Carpooled1,1784.4%
Public transit1480.6%
Walked2040.8%
Bicycle290.1%
Worked from home2,5749.7%
Other means1850.7%

Travel time

CountShare
Under 15 min6,58827.4%
15 to 29 min7,16729.8%
30 to 44 min5,71523.8%
45 to 59 min2,2609.4%
60+ min2,3069.6%

Households

Average household size
2.56
Poverty rate
6.3% (3,307 of 52,454)
CountShare
Family households14,00968.3%
Nonfamily households6,50931.7%

Housing

Median year structure built
1990

Occupancy

CountShare
Occupied20,51896.2%
Vacant8063.8%

Tenure (of occupied units)

CountShare
Owner-occupied15,55575.8%
Renter-occupied4,96324.2%

Units in structure

CountShare
1-unit, detached15,14771.0%
1-unit, attached2,0899.8%
2 to 4 units1,6177.6%
5 to 19 units1,1835.5%
20 or more units4552.1%
Mobile home & other8333.9%

Geography

County GEOID
17063
State
Illinois
Land area
418 sq mi
Water area
12 sq mi
Center point
41.2924, -88.4011

Cities & places

12

Compare with nearby counties

5

Illinois rankings

21

Other counties in Illinois

101