Clinton County, IL ZIP Codes

Illinois (IL)  ·  13 ZIP codes  ·  13 cities
13
ZIP codes
36,793
population (2021)
-2.6%
pop change since 2010
17027
FIPS code
Clinton County ZIP code map
About Clinton County
Clinton County is located in Illinois and contains 13 ZIP codes across 13 cities and communities. The county's population was 36,793 as of 2021, a decrease of 2.6% from 37,762 in 2010. The timezone is Mountain Time (observes DST). The Federal Information Processing System (FIPS) code for Clinton County is 17027.
Population
2021 population36,793
2010 population37,762
Change-2.6%
County details
StateIllinois
FIPS code17027
TimezoneMountain
Daylight savingYes
Cities in Clinton County
ZIP codes for Clinton County, IL (13)

Demographics & statistics

31,255
Population
40.5
Median age
$83,421
Median household income
$43,719
Per capita income
$180,311
Median home value
$893
Median monthly rent
83.1%
Home ownership
5.2%
Poverty rate
1.9%
Unemployment
10,854
Housing units
25.8%
Bachelor's or higher

Age distribution

Male Female
884
Under 5
853
1,067
5–9
1,030
936
10–14
903
974
15–19
939
896
20–24
865
1,966
25–34
1,896
1,941
35–44
1,872
2,066
45–54
1,993
1,190
55–59
1,147
1,171
60–64
1,130
1,679
65–74
1,619
794
75–84
766
345
85+
333
← Male
Female →

Age summary

GroupCount%
Under 186,88523.4%
18 and over24,37076.6%
65 and over5,53617.0%
Median age40.5 years

Race & ethnicity

White 92.3%
Two or more races 3.3%
Hispanic or Latino 2.5%
Other race 0.9%
Black or African American 0.7%
Asian 0.3%
GroupCount%
White29,57492.3%
Two or more races1,0473.3%
Hispanic or Latino7902.5%
Other race2740.9%
Black or African American2400.7%
Asian1050.3%

Household income

Under $10k 3.1%
$10k–$15k 1.9%
$15k–$25k 4.4%
$25k–$35k 7.3%
$35k–$50k 9.1%
$50k–$75k 19.1%
$75k–$100k 15.2%
$100k–$150k 20.9%
$150k–$200k 9.8%
$200k+ 9.1%
Range% of households
Under $10k3.1%
$10k–$15k1.9%
$15k–$25k4.4%
$25k–$35k7.3%
$35k–$50k9.1%
$50k–$75k19.1%
$75k–$100k15.2%
$100k–$150k20.9%
$150k–$200k9.8%
$200k+9.1%
Median income$83,421

Housing

Home values

Under $50k 5.2%
$50k–$100k 11.6%
$100k–$150k 21.2%
$150k–$200k 21.2%
$200k–$300k 24.1%
$300k–$500k 15.0%
$500k–$1M 1.6%
$1M+ 0.2%

Housing overview

MetricValue
Median home value$180,311
Median rent / month$893
Owner occupied83.1%
Renter occupied16.9%
Vacant3.8%
Single-family detached83.2%
Large apartment buildings1.2%
Mobile homes6.2%
Median rooms5.9
Avg household size (owned)2.56

Year built

Era%
2020 or later0.2%
2010–20194.9%
2000–200915.8%
1990–199914.2%
1980–198912.8%
1970–197914.8%
1960–196912.2%
1950–19597.5%
1940–19494.8%
1939 or earlier12.8%

Bedrooms

Size% of units
No bedroom (studio)2.3%
1 bedroom4.5%
2 bedrooms22.1%
3 bedrooms53.2%
4 bedrooms14.4%
5+ bedrooms3.6%

Vehicles per household

Vehicles% of households
No vehicle2.4%
1 vehicle23.4%
2 vehicles40.4%
3 or more33.7%

Heating fuel

Fuel type%
Utility gas54.7%
Electricity25.1%
Propane / LP gas16.4%
Wood1.1%
No fuel used1.2%

Households & families

Household typeCount%
Married-couple family7,21358.0%
Cohabiting couple7165.3%
Male householder, no spouse2,07616.5%
Female householder, no spouse2,61620.2%
Households with children under 183,49028.4%
Households with seniors (65+)3,99531.4%
Average household size2.50

Marital status

StatusMaleFemale
Never married31.4%19.8%
Married58.1%59.9%
Separated0.8%0.7%
Widowed2.1%10.2%
Divorced7.7%9.4%

Education

Less than 9th grade 2.6%
Some HS, no diploma 2.4%
HS graduate 31.7%
Some college, no degree 20.1%
Associate's degree 17.3%
Bachelor's degree 17.6%
Graduate / professional 8.3%
Metric%
HS diploma or higher95.0%
Bachelor's or higher25.8%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool5617.1%
Kindergarten6057.1%
Elementary school2,88944.2%
High school1,59524.5%
College / grad school1,29417.1%

Employment

Industry of employment

Education & healthcare 23.8%
Construction 10.9%
Manufacturing 10.7%
Professional & management 9.3%
Retail trade 8.4%
Finance & real estate 7.0%
Public administration 6.4%
Transportation & utilities 6.3%
Arts, food & hospitality 5.9%
Other services 3.5%
Agriculture & mining 3.4%
Wholesale trade 2.7%
Information 2.0%

Occupation

Category%
Management, business & arts42.5%
Service14.8%
Sales & office15.6%
Natural resources & construction11.5%
Production & transportation15.7%

Employment type

Type%
Private sector77.8%
Government14.7%
Self-employed7.4%
Unpaid family workers0.1%

Commute

Method%
Drive alone81.2%
Carpool6.3%
Public transit0.5%
Walk2.4%
Other means0.5%
Avg commute (minutes)27.1

Poverty

All people 5.2%
Under 18 years 5.8%
18 and over 5.1%
Married-couple families 2.7%
Female-led households 15.8%

Income support

Source% of households
Social Security33.1%
Retirement income28.2%
Supplemental Security2.4%
Cash public assistance1.1%
Food stamps / SNAP4.9%

Health indicators

Condition%
High blood pressure31.2%
High cholesterol31.8%
Heart disease6.0%
Stroke2.8%
Asthma9.7%
Arthritis25.3%
Kidney disease2.6%
Pulmonary disease6.6%
Cancer6.6%
Behavior / access%
Binge drinking16.7%
No physical activity22.6%
Less than 7 hrs sleep32.0%
Fair or poor health12.8%
Poor mental health12.9%
Poor physical health9.3%
No health insurance10.2%
Visited doctor (checkup)75.9%
Visited dentist67.6%
Cholesterol screening89.3%
Teeth loss13.3%

Veterans & disability

VeteransCount%
Civilian veterans2,5049.9%
Disability%
Any disability12.4%
Under 183.7%
18–64 years10.3%
65 and over31.7%

Health insurance coverage

Type%
Private insurance81.4%
Public insurance28.9%
Uninsured under 194.3%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only29,51895.0%
Spanish3561.1%
Other Indo-European1970.6%
Asian & Pacific Islander860.3%
Other languages80.0%

Place of birth & citizenship

OriginCount%
Native born (US)30,65998.4%
Born in same state30,31097.4%
Born in different state24,36378.9%
Foreign born3491.0%
Naturalized citizen5961.6%
Not a US citizen26061.5%

Ancestry

AncestryCount%
Italian2,4787.9%
Arab2,2227.1%
French1,5555%
English4321.4%
Irish960.3%
AncestryCount%
Polish700.2%
German610.2%
Dutch190.1%
Norwegian20%

Technology access

Metric% of households
Computer access39.6%
Internet access90.8%

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

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