DeKalb County, Illinois Population 2020

DeKalb County, Illinois's estimated population is 104,127 with a growth rate of -0.01% in the past year according to the most recent United States census data. DeKalb County, Illinois is the 19th largest county in Illinois.

Year Population Growth Growth Rate
2020104,127-8-0.01%
2019104,135-8-0.01%
2018104,143-8-0.01%
2017104,1511670.16%
2016103,984-170-0.16%
2015104,154-416-0.40%
2014104,5703630.35%
2013104,207-153-0.15%
2012104,360-78-0.07%
2011104,438-709-0.67%
2010105,14727,21534.92%
199077,9323,3084.43%
198074,6242,9704.14%
197071,65419,94038.56%
196051,71410,93326.81%
195040,7816,39318.59%
194034,3881,7445.34%
193032,6441,3054.16%
192031,339-2,118-6.33%
191033,4571,7015.36%
190031,7564,69017.33%
189027,0662981.11%
188026,7683,50315.06%
187023,2654,17921.90%
186019,08611,546153.13%
18507,5405,843344.31%
18401,6970.00%
2020 Growth Rate
-0.01%
County Website
Founded
March 4, 1837
County Seat

DeKalb County, Illinois Population Growth

Population by Race

Race Population Percentage
White87,83284.29%
Black or African American8,0337.71%
Some Other Race3,2133.08%
Asian2,5802.48%
Two or More Races2,4802.38%
American Indian and Alaska Native620.06%

DeKalb County, Illinois Population Pyramid 2020

DeKalb County, Illinois Median Age

31


Total

30.3


Male

32


Female

DeKalb County, Illinois Adults

There are 81,607 adults, (12,401 of whom are seniors) in DeKalb County, Illinois.

DeKalb County, Illinois Age Dependency

50.6

Age Dependency Ratio

17.9

Old Age Dependency Ratio

32.6

Child Dependency Ratio

DeKalb County, Illinois Sex Ratio

Female

52,620

50.50%

Male

51,580

49.50%

DeKalb County, Illinois Households and Families

DeKalb County, Illinois Renter vs Owner Occupied by Household Type

DeKalb County, Illinois Household Types

Type Owner Renter
Married79.5%20.5%
Male62%38%
All57%43%
Non Family37.9%62.1%
Female31.5%68.5%

57.0%

Rate of Home Ownership

Type Count Average Size Owned
All37,7032.6457
Married17,0323.2979.5
Non Family14,7781.5837.9
Female4,3293.4331.5
Male1,5643.3762

3.21

Average Family Size

2.64

Average Household Size

8.9%

Unmarried (Opposite Sex)

0.4%

Unmarried (Same Sex)

DeKalb County, Illinois Education

Education Attained Count Percentage
Less Than 9th Grade1,8282.98%
9th to 12th Grade2,8444.63%
High School Graduate15,62625.46%
Some College14,93224.33%
Associates Degree6,87911.21%
Bachelors Degree12,01419.58%
Graduate Degree7,24011.80%

DeKalb County, Illinois Educational Attainment by Race

Name Total High School Bachelors
White51,33248,45916,301
Hispanic5,1033,722751
Black2,9552,643997
Other Race1,54688266
Asian1,5341,4831,008
Multiple Races587532205
Native American292924

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

The highest rate of bachelors degrees is among native american people with a rate of 82.76%.

Name Average Male Female
Overall$39,335$48,563$30,498
Less Than High School$24,243$24,640$23,438
High School Grad$32,254$41,891$22,859
Some College$37,363$48,895$27,762
Bachelors Degree$48,253$60,687$39,314
Graduate Degree$60,333$63,227$56,841

$39,335

Average Earnings

$48,563

Average Male

$30,498

Average Female

DeKalb County, Illinois Language

DeKalb County, Illinois Language by Age

DeKalb County, Illinois Language

88.31% of DeKalb County, Illinois residents speak only English, while 11.69% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.82% of the population.

DeKalb County, Illinois Poverty

DeKalb County, Illinois Poverty by Race

Name Total In Poverty Poverty Rate
White77,6179,44312.17%
Black6,7213,04345.28%
Hispanic10,7392,20320.51%
Asian2,3961,21150.54%
Other3,06778525.60%
Multiple2,29853923.46%
Native381642.11%

16.47%

Overall Poverty Rate

14.87%

Male Poverty Rate

18.03%

Female Poverty Rate

Poverty in DeKalb County, Illinois

The race most likely to be in poverty in DeKalb County, Illinois is Asian, with 50.54% below the poverty level.

The race least likely to be in poverty in DeKalb County, Illinois is White, with 12.17% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.19%. Among those working part-time, it was 27.81%, and for those that did not work, the poverty rate was 23.38%.

Name Poverty
Less Than High School16.93%
High School11.25%
Some College8.95%
Bachelors or Greater7.94%
Name Poverty
Male Unemployed43.05%
Female Unemployed42.56%
Female Employed13.34%
Male Employed8.21%

DeKalb County, Illinois Income

DeKalb County, Illinois Income by Household Type

Name Median Mean
Households$61,086$75,000
Families$77,405$91,760
Married Families$92,805$106,640
Non Families$34,318$45,567

DeKalb County, Illinois Marital Status

DeKalb County, Illinois Marital Status

Marriage Rates

41.9%

Overall Marriage Rate

42.3%

Male Marriage Rate

41.5%

Female Marriage Rate

DeKalb County, Illinois Married by Age and Sex

DeKalb County, Illinois Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

DeKalb County, Illinois Marital Status by Race

DeKalb County, Illinois Veterans

5,171

Number of Veterans

4,816

Male Veterans

355

Female Veterans

War Veterans
Vietnam1,762
Second Gulf War971
First Gulf War817
Korea541
World War II193
Age Group Veterans
65 to 741,368
35 to 541,316
75+1,177
55 to 64708
18 to 34602
Name Veterans % of Total
White4,8826.99%
Hispanic3034.14%
Black1552.69%
Other773.35%
2 or More504.06%
Asian70.29%

$DeKalb County, Illinois Veterans by Education

6.45%

Veteran Poverty Rate

25.76%

Veteran Disability Rate

DeKalb County, Illinois Employment Status

67.4%

Labor Force Participation

62.4%

Employment Rate

7.4%

Unemployment Rate

DeKalb 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

76.17%

Born in Illinois

93.07%

Native Born

6.93%

Foreign Born

4.64%

Non Citizen

Place of Birth

93.07% of DeKalb County, Illinois residents were born in the United States, with 76.17% having been born in Illinois. 4.64% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

  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