Winnebago County, IL ZIP Codes

Illinois (IL)  ·  28 ZIP codes  ·  12 cities
28
ZIP codes
283,119
population (2021)
-4.1%
pop change since 2010
17201
FIPS code
Winnebago County ZIP code map
About Winnebago County
Winnebago County is located in Illinois and contains 28 ZIP codes across 12 cities and communities. The county's population was 283,119 as of 2021, a decrease of 4.1% from 295,266 in 2010. The timezone is Mountain Time (observes DST). The Federal Information Processing System (FIPS) code for Winnebago County is 17201.
Population
2021 population283,119
2010 population295,266
Change-4.1%
County details
StateIllinois
FIPS code17201
TimezoneMountain
Daylight savingYes
Cities in Winnebago County
ZIP codes for Winnebago County, IL (28)

Demographics & statistics

285,343
Population
39.5
Median age
$64,673
Median household income
$33,606
Per capita income
$140,889
Median home value
$912
Median monthly rent
66.4%
Home ownership
12.9%
Poverty rate
6.5%
Unemployment
85,422
Housing units
23.3%
Bachelor's or higher

Age distribution

Male Female
8,793
Under 5
8,748
8,913
5–9
8,869
9,902
10–14
9,853
9,339
15–19
9,293
8,832
20–24
8,787
17,795
25–34
17,706
16,927
35–44
16,842
17,638
45–54
17,549
9,634
55–59
9,586
9,473
60–64
9,426
15,037
65–74
14,961
7,015
75–84
6,980
3,732
85+
3,713
← Male
Female →

Age summary

GroupCount%
Under 1866,84822.3%
18 and over218,49577.7%
65 and over51,43821.7%
Median age39.5 years

Race & ethnicity

White 66%
Black or African American 12.3%
Hispanic or Latino 7.9%
Two or more races 7.2%
Other race 3.7%
Asian 2.6%
American Indian / Alaska Native 0.3%
GroupCount%
White204,22466%
Black or African American38,05512.3%
Hispanic or Latino24,3157.9%
Two or more races22,3077.2%
Other race11,5933.7%
Asian8,1962.6%
American Indian / Alaska Native8660.3%

Household income

Under $10k 4.6%
$10k–$15k 3.9%
$15k–$25k 10.8%
$25k–$35k 8.1%
$35k–$50k 13.4%
$50k–$75k 16.9%
$75k–$100k 12.0%
$100k–$150k 16.3%
$150k–$200k 7.9%
$200k+ 6.2%
Range% of households
Under $10k4.6%
$10k–$15k3.9%
$15k–$25k10.8%
$25k–$35k8.1%
$35k–$50k13.4%
$50k–$75k16.9%
$75k–$100k12.0%
$100k–$150k16.3%
$150k–$200k7.9%
$200k+6.2%
Median income$64,673

Housing

Home values

Under $50k 7.1%
$50k–$100k 18.1%
$100k–$150k 20.9%
$150k–$200k 21.2%
$200k–$300k 18.4%
$300k–$500k 6.5%
$500k–$1M 2.0%
$1M+ 0.2%

Housing overview

MetricValue
Median home value$140,889
Median rent / month$912
Owner occupied66.4%
Renter occupied33.6%
Vacant6.6%
Single-family detached69.8%
Large apartment buildings7.1%
Mobile homes1.1%
Median rooms5.7
Avg household size (owned)2.38

Year built

Era%
2020 or later0.2%
2010–20191.9%
2000–200918.2%
1990–199913.5%
1980–198910.0%
1970–197913.6%
1960–196911.1%
1950–195911.6%
1940–19495.3%
1939 or earlier14.7%

Bedrooms

Size% of units
No bedroom (studio)6.1%
1 bedroom7.8%
2 bedrooms24.0%
3 bedrooms41.5%
4 bedrooms16.8%
5+ bedrooms3.8%

Vehicles per household

Vehicles% of households
No vehicle12.4%
1 vehicle29.4%
2 vehicles37.1%
3 or more21.1%

Heating fuel

Fuel type%
Utility gas76.6%
Electricity14.4%
Propane / LP gas4.9%
Wood0.5%
No fuel used3.0%

Households & families

Household typeCount%
Married-couple family51,03345.0%
Cohabiting couple8,3236.7%
Male householder, no spouse22,10419.4%
Female householder, no spouse33,85928.9%
Households with children under 1833,48528.0%
Households with seniors (65+)36,88935.7%
Average household size2.33

Marital status

StatusMaleFemale
Never married32.3%28.2%
Married49.5%45.2%
Separated1.8%1.5%
Widowed6.1%13.1%
Divorced10.2%12.0%

Education

Less than 9th grade 4.3%
Some HS, no diploma 7.1%
HS graduate 33.3%
Some college, no degree 22.3%
Associate's degree 9.7%
Bachelor's degree 14.5%
Graduate / professional 8.8%
Metric%
HS diploma or higher88.6%
Bachelor's or higher23.3%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool4,3536.4%
Kindergarten3,5104.8%
Elementary school29,42941.9%
High school15,47722.6%
College / grad school13,21818.6%

Employment

Industry of employment

Education & healthcare 21.6%
Manufacturing 19.4%
Retail trade 10.9%
Professional & management 8.0%
Arts, food & hospitality 7.4%
Transportation & utilities 6.2%
Construction 5.9%
Other services 4.2%
Finance & real estate 3.7%
Wholesale trade 2.6%
Public administration 2.6%
Information 1.1%
Agriculture & mining 0.8%

Occupation

Category%
Management, business & arts31.7%
Service16.0%
Sales & office19.0%
Natural resources & construction8.9%
Production & transportation18.9%

Employment type

Type%
Private sector80.3%
Government10.4%
Self-employed3.6%
Unpaid family workers0.2%

Commute

Method%
Drive alone75.1%
Carpool8.7%
Public transit0.6%
Walk1.3%
Other means1.4%
Avg commute (minutes)22.4

Poverty

All people 12.9%
Under 18 years 19.2%
18 and over 10.9%
Married-couple families 4.0%
Female-led households 25.5%

Income support

Source% of households
Social Security37.3%
Retirement income26.7%
Supplemental Security4.9%
Cash public assistance5.3%
Food stamps / SNAP15.2%

Health indicators

Condition%
High blood pressure36.0%
High cholesterol33.4%
Heart disease7.0%
Stroke3.5%
Asthma9.8%
Arthritis27.9%
Kidney disease3.2%
Pulmonary disease7.5%
Cancer7.3%
Behavior / access%
Binge drinking14.4%
No physical activity27.0%
Less than 7 hrs sleep31.5%
Fair or poor health16.1%
Poor mental health12.9%
Poor physical health10.7%
No health insurance12.0%
Visited doctor (checkup)77.9%
Visited dentist63.6%
Cholesterol screening89.8%
Teeth loss15.8%

Veterans & disability

VeteransCount%
Civilian veterans14,8488.1%
Disability%
Any disability16.2%
Under 184.1%
18–64 years10.7%
65 and over36.0%

Health insurance coverage

Type%
Private insurance63.4%
Public insurance43.9%
Uninsured under 193.8%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only267,80294.3%
Spanish12,5554.3%
Other Indo-European8,3243.1%
Asian & Pacific Islander1,6600.5%
Other languages1,5220.4%

Place of birth & citizenship

OriginCount%
Native born (US)260,34792.6%
Born in same state257,82291.9%
Born in different state198,50569.0%
Foreign born2,5250.7%
Naturalized citizen24,9967.4%
Not a US citizen11,77357.0%

Ancestry

AncestryCount%
Italian32,36411.3%
French23,9648.4%
Arab8,8843.1%
Polish7,8912.8%
English3,5601.2%
AncestryCount%
Dutch1,8120.6%
Norwegian8200.3%
German6940.2%
Irish4500.2%

Technology access

Metric% of households
Computer access41.0%
Internet access88.1%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

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