Grundy County, Illinois Population 2020

Grundy County, Illinois's estimated population is 50,613 with a growth rate of 0.61% in the past year according to the most recent United States census data. Grundy County, Illinois is the 27th largest county in Illinois.

Year Population Growth Growth Rate
201850,9723590.71%
201750,6133070.61%
201650,306-57-0.11%
201550,363730.15%
201450,2901030.21%
201350,187280.06%
201250,159640.13%
201150,095-57-0.11%
201050,15217,81555.09%
199032,3371,7555.74%
198030,5824,04715.25%
197026,5354,18518.72%
196022,3503,13316.30%
195019,2178194.45%
194018,398-280-1.50%
193018,678980.53%
192018,580-5,582-23.10%
191024,162260.11%
190024,1363,11214.80%
189021,0244,29225.65%
188016,7321,79412.01%
187014,9384,55943.93%
186010,3797,356243.33%
18503,0230.00%

How Many People Live in Grundy County, Illinois?

50,613

Population by Race

Race Population Percentage
White47,31693.68%
Some Other Race1,1972.37%
Two or More Races7981.58%
Black or African American7351.46%
Asian4110.81%
American Indian and Alaska Native350.07%
Native Hawaiian and Other Pacific Islander170.03%

Grundy County, Illinois Population Pyramid 2020

Grundy County, Illinois Median Age

37.6


Total

36.6


Male

38.8


Female

Grundy County, Illinois Adults

There are 37,573 adults, (6,697 of whom are seniors) in Grundy County, Illinois.

Grundy County, Illinois Age Dependency

63.6

Age Dependency Ratio

21.7

Old Age Dependency Ratio

41.9

Child Dependency Ratio

Grundy County, Illinois Sex Ratio

Female

25,268

50.03%

Male

25,241

49.97%

Grundy County, Illinois Households and Families

Grundy County, Illinois Renter vs Owner Occupied by Household Type

Grundy County, Illinois Household Types

Type Owner Renter
Married82.2%17.8%
All71.1%28.9%
Non Family59.6%40.4%
Female48.9%51.1%
Male48.8%51.2%

71.1%

Rate of Home Ownership

Type Count Average Size Owned
All19,3982.5971.1
Married11,1993.1582.2
Non Family5,4751.2159.6
Female1,9273.0248.9
Male7973.1548.8

3.05

Average Family Size

2.59

Average Household Size

4.9%

Unmarried (Opposite Sex)

0.2%

Unmarried (Same Sex)

Grundy County, Illinois Education

Education Attained Count Percentage
Less Than 9th Grade8582.56%
9th to 12th Grade1,4624.36%
High School Graduate11,08533.04%
Some College9,09327.10%
Associates Degree3,1499.38%
Bachelors Degree5,17715.43%
Graduate Degree2,7318.14%

Grundy County, Illinois Educational Attainment by Race

Name Total High School Bachelors
White29,95628,4907,251
Hispanic2,4711,677361
Black51946659
Other Race50529039
Asian315310203
Multiple Races22922627
Islander1717
Native American17157

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 64.44%.

Name Average Male Female
Overall$46,495$59,255$34,698
Less Than High School$31,840$41,404$28,582
High School Grad$40,538$53,273$26,463
Some College$43,519$62,381$28,447
Bachelors Degree$54,595$68,387$43,553
Graduate Degree$63,146$75,673$60,333

$46,495

Average Earnings

$59,255

Average Male

$34,698

Average Female

Grundy County, Illinois Language

Grundy County, Illinois Language by Age

Grundy County, Illinois Language

91.80% of Grundy County, Illinois residents speak only English, while 8.20% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.47% of the population.

Grundy County, Illinois Poverty

Grundy County, Illinois Poverty by Race

Name Total In Poverty Poverty Rate
White43,1903,4457.98%
Hispanic4,85855811.49%
Other1,19724520.47%
Black70617124.22%
Multiple79212716.04%
Asian4117618.49%

8.79%

Overall Poverty Rate

7.38%

Male Poverty Rate

10.19%

Female Poverty Rate

Poverty in Grundy County, Illinois

The race most likely to be in poverty in Grundy County, Illinois is Black, with 24.22% below the poverty level.

The race least likely to be in poverty in Grundy County, Illinois is White, with 7.98% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.83%. Among those working part-time, it was 10.45%, and for those that did not work, the poverty rate was 15.56%.

Name Poverty
Less Than High School11.17%
Some College10.80%
High School7.91%
Bachelors or Greater2.00%
Name Poverty
Female Unemployed17.29%
Male Unemployed12.70%
Female Employed5.71%
Male Employed3.71%

Grundy County, Illinois Income

Grundy County, Illinois Income by Household Type

Name Median Mean
Households$74,140$87,844
Families$86,363$99,685
Married Families$95,537-
Non Families$42,772$53,730

Grundy County, Illinois Marital Status

Grundy County, Illinois Marital Status

Marriage Rates

58.1%

Overall Marriage Rate

59.5%

Male Marriage Rate

56.8%

Female Marriage Rate

Grundy County, Illinois Married by Age and Sex

Grundy County, Illinois Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Grundy County, Illinois Marital Status by Race

Grundy County, Illinois Veterans

3,041

Number of Veterans

2,804

Male Veterans

237

Female Veterans

War Veterans
Vietnam920
Second Gulf War570
First Gulf War539
Korea214
World War II78

Grundy County, Illinois Veterans by Race

Name Veterans % of Total
White2,9768.35%
Hispanic2116.88%
2 or More4113.99%
Black163.08%
Indian847.06%

Grundy County, Illinois Veterans by Education

8.14%

Veteran Poverty Rate

22.07%

Veteran Disability Rate

Grundy County, Illinois Employment Status

67.6%

Labor Force Participation

64.2%

Employment Rate

5.1%

Unemployment Rate

Grundy County, Illinois Place of Birth

Origin of Non Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

82.44%

Born in Illinois

96.24%

Native Born

3.76%

Foreign Born

1.23%

Non Citizen

Place of Birth

96.24% of Grundy County, Illinois residents were born in the United States, with 82.44% having been born in Illinois. 1.23% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Population of Cities in Grundy County, Illinois

City 2010 Census 2016 Estimated Growth Growth Rate
Morris13638144968586.29%
Channahon 1256012600400.32%
Minooka 10924112543303.02%
Braidwood 62176157-60-0.97%
Coal City 55875434-153-2.74%
Dwight 42604032-228-5.35%
Diamond 25272471-56-2.22%
Seneca 23652281-84-3.55%
Gardner14631419-44-3.01%
Mazon1015978-37-3.65%
Braceville 792760-32-4.04%
Godley 6026959315.45%
South Wilmington681655-26-3.82%
Carbon Hill345344-1-0.29%
Verona215212-3-1.40%
East Brooklyn106104-2-1.89%
Kinsman9997-2-2.02%
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990