Winnebago County, Illinois Population 2020

Winnebago County, Illinois's estimated population is 282,763 with a growth rate of -0.23% in the past year according to the most recent United States census data. Winnebago County, Illinois is the 7th largest county in Illinois.

Year Population Growth Growth Rate
2020282,763-659-0.23%
2019283,422-659-0.23%
2018284,081-659-0.23%
2017284,740-1,314-0.46%
2016286,054-1,168-0.41%
2015287,222-1,553-0.54%
2014288,775-2,219-0.76%
2013290,994-1,118-0.38%
2012292,112-1,522-0.52%
2011293,634-1,454-0.49%
2010295,08842,17516.68%
1990252,9132,0290.81%
1980250,8844,2611.73%
1970246,62336,85817.57%
1960209,76557,38037.65%
1950152,38531,20725.75%
1940121,1783,8053.24%
1930117,37326,44429.08%
192090,92927,77643.98%
191063,15315,30831.99%
190047,8457,90719.80%
189039,9389,43330.92%
188030,5051,2044.11%
187029,3014,81019.64%
186024,49112,718108.03%
185011,7737,164155.44%
18404,6090.00%
2020 Growth Rate
-0.23%
County Website
Founded
January 16, 1836
County Seat

Winnebago County, Illinois Population Growth

Population by Race

Race Population Percentage
White226,08779.00%
Black or African American36,83312.87%
Two or More Races8,9543.13%
Asian7,3392.56%
Some Other Race6,0162.10%
American Indian and Alaska Native8460.30%
Native Hawaiian and Other Pacific Islander990.03%
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Winnebago County, Illinois Population Pyramid 2020

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Winnebago County, Illinois Median Age

39.6


Total

38.3


Male

40.7


Female

Winnebago County, Illinois Adults

There are 218,501 adults, (47,426 of whom are seniors) in Winnebago County, Illinois.

Winnebago County, Illinois Age Dependency

67.3

Age Dependency Ratio

27.7

Old Age Dependency Ratio

39.6

Child Dependency Ratio

Winnebago County, Illinois Sex Ratio

Female

146,426

51.17%

Male

139,748

48.83%

Winnebago County, Illinois Households and Families

Winnebago County, Illinois Renter vs Owner Occupied by Household Type

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Winnebago County, Illinois Household Types

Type Owner Renter
Married84.7%15.3%
All65.7%34.3%
Non Family53.9%46.1%
Male52.6%47.4%
Female40.7%59.3%

65.7%

Rate of Home Ownership

Type Count Average Size Owned
All114,6082.4665.7
Married51,3903.0884.7
Non Family40,8921.253.9
Female16,2363.3440.7
Male6,0903.452.6

3.05

Average Family Size

2.46

Average Household Size

6.9%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

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Winnebago County, Illinois Education

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Education Attained Count Percentage
Less Than 9th Grade7,8604.04%
9th to 12th Grade16,1038.28%
High School Graduate62,18131.98%
Some College47,39324.38%
Associates Degree16,9828.73%
Bachelors Degree27,29314.04%
Graduate Degree16,6178.55%
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Winnebago County, Illinois Educational Attainment by Race

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Name Total High School Bachelors
White148,184135,62636,512
Black21,16817,2553,018
Hispanic17,56511,1941,562
Asian4,8414,1072,298
Other Race3,1741,693323
Multiple Races3,1092,543584
Native American60248552
Islander76764

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 47.47%.

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Name Average Male Female
Overall$35,796$43,093$28,795
Less Than High School$20,953$27,911$15,232
High School Grad$29,943$36,631$24,108
Some College$35,117$45,273$27,489
Bachelors Degree$51,710$64,586$42,994
Graduate Degree$66,794$76,025$60,792

$35,796

Average Earnings

$43,093

Average Male

$28,795

Average Female

Winnebago County, Illinois Language

Winnebago County, Illinois Language by Age

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Winnebago County, Illinois Language

85.46% of Winnebago County, Illinois residents speak only English, while 14.54% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 9.75% of the population.

Winnebago County, Illinois Poverty

Winnebago County, Illinois Poverty by Race

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Name Total In Poverty Poverty Rate
White196,14719,1189.75%
Black35,66413,73038.50%
Hispanic35,0958,41923.99%
Multiple8,5922,19625.56%
Asian7,3171,22216.70%
Other5,99494415.75%
Native80428535.45%
Islander982626.53%

15.64%

Overall Poverty Rate

14.13%

Male Poverty Rate

17.07%

Female Poverty Rate

Poverty in Winnebago County, Illinois

The race most likely to be in poverty in Winnebago County, Illinois is Black, with 38.50% below the poverty level.

The race least likely to be in poverty in Winnebago County, Illinois is White, with 9.75% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.28%. Among those working part-time, it was 19.21%, and for those that did not work, the poverty rate was 20.35%.

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Name Poverty
Less Than High School25.62%
High School13.36%
Some College9.88%
Bachelors or Greater4.22%
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Name Poverty
Female Unemployed44.48%
Male Unemployed33.11%
Female Employed9.65%
Male Employed6.30%

Winnebago County, Illinois Income

Winnebago County, Illinois Income by Household Type

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Name Median Mean
Households$52,743$69,030
Families$64,366$81,718
Married Families$80,233$96,436
Non Families$31,508$42,938
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Winnebago County, Illinois Marital Status

Winnebago County, Illinois Marital Status

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Marriage Rates

47.5%

Overall Marriage Rate

50.0%

Male Marriage Rate

45.3%

Female Marriage Rate

Winnebago County, Illinois Married by Age and Sex

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Winnebago 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 55-64.

Winnebago County, Illinois Marital Status by Race

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Winnebago County, Illinois Veterans

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17,686

Number of Veterans

16,568

Male Veterans

1,118

Female Veterans

War Veterans
Vietnam6,784
First Gulf War2,590
Second Gulf War2,485
Korea1,590
World War II988
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Age Group Veterans
65 to 745,136
75+4,266
35 to 543,905
55 to 642,967
18 to 341,412
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Name Veterans % of Total
White15,7988.83%
Black1,2775.04%
Hispanic6452.96%
2 or More2686.56%
Asian2113.85%
Other872.28%
Indian456.87%

Winnebago County, Illinois Veterans by Education

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7.03%

Veteran Poverty Rate

30.14%

Veteran Disability Rate

Winnebago County, Illinois Employment Status

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64.5%

Labor Force Participation

58.6%

Employment Rate

9.1%

Unemployment Rate

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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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68.30%

Born in Illinois

91.60%

Native Born

8.40%

Foreign Born

4.27%

Non Citizen

Place of Birth

91.60% of Winnebago County, Illinois residents were born in the United States, with 68.30% having been born in Illinois. 4.27% 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