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World Population Review
Winnebago County, Illinois Population 2021
Winnebago County, Illinois's estimated population is 280,456 with a growth rate of -0.38% in the past year according to the most recent United States census data. Winnebago County, Illinois is the 8th largest county in Illinois. The 2010 Population was 295,083 and has seen a growth of -4.96% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2021 | 280,456 | -1,058 | -0.38% |
| 2020 | 281,514 | -1,058 | -0.37% |
| 2019 | 282,572 | -1,058 | -0.37% |
| 2018 | 283,630 | -1,051 | -0.37% |
| 2017 | 284,681 | -1,384 | -0.48% |
| 2016 | 286,065 | -1,083 | -0.38% |
| 2015 | 287,148 | -1,547 | -0.54% |
| 2014 | 288,695 | -2,250 | -0.77% |
| 2013 | 290,945 | -1,139 | -0.39% |
| 2012 | 292,084 | -1,558 | -0.53% |
| 2011 | 293,642 | -1,441 | -0.49% |
| 2010 | 295,083 | 42,170 | 16.67% |
| 1990 | 252,913 | 2,029 | 0.81% |
| 1980 | 250,884 | 4,261 | 1.73% |
| 1970 | 246,623 | 36,858 | 17.57% |
| 1960 | 209,765 | 57,380 | 37.65% |
| 1950 | 152,385 | 31,207 | 25.75% |
| 1940 | 121,178 | 3,805 | 3.24% |
| 1930 | 117,373 | 26,444 | 29.08% |
| 1920 | 90,929 | 27,776 | 43.98% |
| 1910 | 63,153 | 15,308 | 31.99% |
| 1900 | 47,845 | 7,907 | 19.80% |
| 1890 | 39,938 | 9,433 | 30.92% |
| 1880 | 30,505 | 1,204 | 4.11% |
| 1870 | 29,301 | 4,810 | 19.64% |
| 1860 | 24,491 | 12,718 | 108.03% |
| 1850 | 11,773 | 7,164 | 155.44% |
| 1840 | 4,609 | 0.00% |
2021 Growth Rate
-0.38%
County Website
State
Founded
January 16, 1836
County Seat
Lat./Long.
2010 Population
295,083
Growth Since 2010
-4.96%
Winnebago County, Illinois Population Growth
| Race | Population | Percentage |
|---|---|---|
| White | 224,363 | 78.77% |
| Black or African American | 36,935 | 12.97% |
| Two or More Races | 9,460 | 3.32% |
| Asian | 7,530 | 2.64% |
| Some Other Race | 5,656 | 1.99% |
| American Indian and Alaska Native | 831 | 0.29% |
| Native Hawaiian and Other Pacific Islander | 44 | 0.02% |
Winnebago County, Illinois Population by Race
Winnebago County, Illinois Population Pyramid $2021
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Winnebago County, Illinois Population by Age
Winnebago County, Illinois Households and Families
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 114,779 | 2.44 | 65.9 |
| Married | 51,464 | 3.07 | 85 |
| Non Family | 40,880 | 1.19 | 53.5 |
| Female | 16,324 | 3.28 | 40.4 |
| Male | 6,111 | 3.38 | 55.3 |
3.03
Average Family Size
2.44
Average Household Size
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Winnebago County, Illinois Households by Type
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 7,961 | 4.10% |
| 9th to 12th Grade | 15,953 | 8.22% |
| High School Graduate | 61,568 | 31.74% |
| Some College | 46,623 | 24.03% |
| Associates Degree | 17,513 | 9.03% |
| Bachelors Degree | 28,076 | 14.47% |
| Graduate Degree | 16,288 | 8.40% |
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Winnebago County, Illinois Educational Attainment by Sex (over 25)
Winnebago County, Illinois Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 146,772 | 134,505 | 36,371 |
| Black | 21,709 | 17,872 | 3,365 |
| Hispanic | 18,024 | 11,411 | 1,581 |
| Asian | 4,999 | 4,175 | 2,516 |
| Other Race | 3,041 | 1,640 | 386 |
| 2+ Races | 2,915 | 2,397 | 531 |
| Native American | 599 | 495 | 56 |
| Islander | 24 | 24 | 3 |
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 50.33%.
Winnebago County, Illinois Educational Attainment by Race
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$36,631
Average Earnings
$44,386
Average Male
$29,994
Average Female
Winnebago County, Illinois Earnings by Educational Attainment
Winnebago County, Illinois Language by Age
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Winnebago County, Illinois Language
85.28% of Winnebago County, Illinois residents speak only English, while 14.72% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 9.97% of the population.
Winnebago County, Illinois Language
Winnebago County, Illinois Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 193,470 | 18,586 | 9.61% |
| Black | 36,139 | 13,287 | 36.77% |
| Hispanic | 35,912 | 8,998 | 25.06% |
| Multiple | 9,071 | 2,432 | 26.81% |
| Asian | 7,496 | 1,119 | 14.93% |
| Other | 5,633 | 1,040 | 18.46% |
| Native | 788 | 254 | 32.23% |
| Islander | 43 | 22 | 51.16% |
15.56%
Overall Poverty Rate
14.08%
Male Poverty Rate
16.96%
Female Poverty Rate
Poverty in Winnebago County, Illinois
The race most likely to be in poverty in Winnebago County, Illinois is Islander, with 51.16% below the poverty level.
The race least likely to be in poverty in Winnebago County, Illinois is White, with 9.61% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 3.85%. Among those working part-time, it was 18.50%, and for those that did not work, the poverty rate was 20.14%.
Winnebago County, Illinois Poverty
Winnebago County, Illinois Poverty Rate by Education
Winnebago County, Illinois Marital Status
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Marriage Rates
47.7%
Overall Marriage Rate
49.8%
Male Marriage Rate
45.7%
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 Marital Status
Winnebago County, Illinois Veterans by War
Winnebago County, Illinois Veterans by Age
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| Name | Veterans | % of Total |
|---|---|---|
| White | 14,859 | 8.35% |
| Black | 1,250 | 4.85% |
| Hispanic | 644 | 2.87% |
| Asian | 254 | 4.52% |
| 2+ Races | 179 | 4.45% |
| Other Race | 87 | 2.36% |
| Native American | 34 | 5.43% |
Winnebago County, Illinois Veterans by Race
Winnebago County, Illinois Veterans by Education
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6.48%
Veteran Poverty Rate
28.68%
Veteran Disability Rate
Winnebago County, Illinois Veterans by Education
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64.1%
Labor Force Participation
58.9%
Employment Rate
8.1%
Unemployment Rate
Winnebago County, Illinois Employment by Age
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Winnebago County, Illinois Employment by Race
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Winnebago 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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91.60%
Native Born
8.40%
Foreign Born
4.28%
Non Citizen
4.12%
Naturalized
Place of Birth
91.60% of Winnebago County, Illinois residents were born in the United States, with 68.57% having been born in Illinois. 4.28% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Winnebago County, Illinois Place of Birth
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990