Lake County, Illinois Population 2021

Lake County, Illinois's estimated population is 690,431 with a growth rate of -0.44% in the past year according to the most recent United States census data. Lake County, Illinois is the 4th largest county in Illinois. The 2010 Population was 704,170 and has seen a growth of -1.95% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
2021690,431-3,052-0.44%
2020693,483-3,052-0.44%
2019696,535-3,052-0.44%
2018699,587-2,888-0.41%
2017702,475-1,683-0.24%
2016704,158-453-0.06%
2015704,6113170.05%
2014704,294870.01%
2013704,2072,1240.30%
2012702,0834410.06%
2011701,642-2,528-0.36%
2010704,170187,75236.36%
1990516,41876,04617.27%
1980440,37257,73415.09%
1970382,63888,98230.30%
1960293,656114,55963.96%
1950179,09758,00347.90%
1940121,09416,70716.00%
1930104,38730,10240.52%
192074,28519,22734.92%
191055,05820,55459.57%
190034,50410,26942.37%
189024,2352,93913.80%
188021,2962821.34%
187021,0142,75715.10%
186018,2574,03128.34%
185014,22611,592440.09%
18402,6340.00%
2021 Growth Rate
-0.44%
County Website
Founded
March 1, 1839
County Seat
2010 Population
704,170
Growth Since 2010
-1.95%
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Lake County, Illinois Population Growth

Population by Race

Race Population Percentage
White531,60975.78%
Asian54,1577.72%
Black or African American47,3856.76%
Some Other Race45,3096.46%
Two or More Races20,5662.93%
American Indian and Alaska Native2,1620.31%
Native Hawaiian and Other Pacific Islander2850.04%
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Lake County, Illinois Population by Race

Lake County, Illinois Population Pyramid $2021

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Lake County, Illinois Median Age

38.4


Total

36.8


Male

40


Female

Lake County, Illinois Adults

There are 529,927 adults, (96,339 of whom are seniors) in Lake County, Illinois.

Lake County, Illinois Age Dependency

61.8

Age Dependency Ratio

22.2

Old Age Dependency Ratio

39.6

Child Dependency Ratio

Lake County, Illinois Sex Ratio

Female

351,007

50.04%

Male

350,466

49.96%

Lake County, Illinois Population by Age

Lake County, Illinois Renter vs Owner Occupied by Household Type

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Lake County, Illinois Household Types

Type Owner Renter
Married84.5%15.5%
All73%27%
Male59.9%40.1%
Non Family58.3%41.7%
Female50.8%49.2%

73.0%

Rate of Home Ownership

Lake County, Illinois Households and Families

Type Count Average Size Owned
All246,1222.7873
Married144,7993.3484.5
Non Family66,0541.2158.3
Female25,3923.3650.8
Male9,8773.4759.9

3.29

Average Family Size

2.78

Average Household Size

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Lake County, Illinois Households by Type

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Education Attained Count Percentage
Less Than 9th Grade22,6114.94%
9th to 12th Grade20,2504.42%
High School Graduate95,00720.76%
Some College83,34818.21%
Associates Degree29,0206.34%
Bachelors Degree121,50126.55%
Graduate Degree85,93918.78%
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Lake County, Illinois Educational Attainment by Sex (over 25)

Lake County, Illinois Educational Attainment by Race

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Race Total High School Bachelors
White307,272297,696161,682
Hispanic78,79150,4899,708
Asian37,15735,34026,785
Black28,76425,8056,738
Other Race25,24814,8001,881
2+ Races7,0626,5442,692
Native American1,4141,112311
Islander16314672

The highest rate of high school graduation is among white people with a rate of 96.88%.

The highest rate of bachelors degrees is among asian people with a rate of 72.09%.

Lake County, Illinois Educational Attainment by Race

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Name Average Male Female
Overall$50,584$61,498$40,113
Less Than 9th Grade$24,949$28,739$19,334
High School Graduate$32,230$38,507$26,941
Some College$42,147$50,173$34,888
Bachelors Degree$70,238$90,786$52,419
Graduate Degree$96,517$124,127$71,670

$50,584

Average Earnings

$61,498

Average Male

$40,113

Average Female

Lake County, Illinois Earnings by Educational Attainment

Lake County, Illinois Language by Age

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Lake County, Illinois Language

71.22% of Lake County, Illinois residents speak only English, while 28.78% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 17.33% of the population.

Lake County, Illinois Language

Lake County, Illinois Poverty by Race

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Name Total In Poverty Poverty Rate
Hispanic148,95020,58713.82%
White422,46920,0734.75%
Black44,4718,97220.17%
Other44,8936,45614.38%
Asian53,1993,1505.92%
Multiple19,6701,7538.91%
Native2,136864.03%
Islander2754616.73%

7.93%

Overall Poverty Rate

7.04%

Male Poverty Rate

8.81%

Female Poverty Rate

Poverty in Lake County, Illinois

The race most likely to be in poverty in Lake County, Illinois is Black, with 20.17% below the poverty level.

The race least likely to be in poverty in Lake County, Illinois is Native, with 4.03% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.74%. Among those working part-time, it was 9.59%, and for those that did not work, the poverty rate was 14.09%.

Lake County, Illinois Poverty

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Name Poverty
Less Than 9th Grade16.99%
High School10.20%
Some College6.27%
Bachelors or Greater2.81%

Lake County, Illinois Poverty Rate by Education

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Rate Poverty
Female Unemployed23.02%
Male Unemployed21.16%
Female Employed4.28%
Male Employed3.26%

Lake County, Illinois Poverty Rate by Employment Status and Sex

Lake County, Illinois Income by Household Type

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Name Median Mean
Households$89,427$127,257
Families$108,478$147,825
Married Families$124,312$166,548
Non Families$44,985$66,712
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Income by Household Type

Lake County, Illinois Marital Status

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Marriage Rates

54.7%

Overall Marriage Rate

56.1%

Male Marriage Rate

53.3%

Female Marriage Rate

Lake County, Illinois Married by Age and Sex

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Lake County, Illinois Marriage

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

Lake County, Illinois Marital Status by Race

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Lake County, Illinois Marital Status

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30,351

Number of Veterans

27,471

Male Veterans

2,880

Female Veterans

War Veterans
Vietnam10,486
Second Gulf War6,141
First Gulf War5,645
Korea2,673
World War II1,182

Lake County, Illinois Veterans by War

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Age Group Veterans
75+7,656
65 to 747,499
35 to 546,049
55 to 645,527
18 to 343,620

Lake County, Illinois Veterans by Age

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Name Veterans % of Total
White25,2806.26%
Black3,2979.81%
Hispanic2,3992.49%
Asian8632.11%
2+ Races5876.10%
Other Race2760.90%
Native American482.90%

Lake County, Illinois Veterans by Race

Lake County, Illinois Veterans by Education

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4.86%

Veteran Poverty Rate

26.63%

Veteran Disability Rate

Lake County, Illinois Veterans by Education

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69%

Labor Force Participation

63.8%

Employment Rate

5.2%

Unemployment Rate

Lake County, Illinois Employment by Age

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Lake County, Illinois Employment by Race

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Lake County, Illinois Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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59.75%

Born in Lake County, Illinois

81.27%

Native Born

18.73%

Foreign Born

9.31%

Non Citizen

9.42%

Naturalized

Place of Birth

81.27% of Lake County, Illinois residents were born in the United States, with 59.75% having been born in Illinois. 9.31% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Lake County, Illinois Place of Birth

  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

Sources