Saint Clair County, IL ZIP Codes

Illinois (IL)  ·  30 ZIP codes  ·  20 cities
30
ZIP codes
254,796
population (2021)
-5.7%
pop change since 2010
17163
FIPS code
Saint Clair County ZIP code map
About Saint Clair County
Saint Clair County is located in Illinois and contains 30 ZIP codes across 20 cities and communities. The county's population was 254,796 as of 2021, a decrease of 5.7% from 270,056 in 2010. The timezone is Mountain Time (observes DST). The Federal Information Processing System (FIPS) code for Saint Clair County is 17163.
Population
2021 population254,796
2010 population270,056
Change-5.7%
County details
StateIllinois
FIPS code17163
TimezoneMountain
Daylight savingYes
Cities in Saint Clair County
ZIP codes for Saint Clair County, IL (30)

Demographics & statistics

248,891
Population
39.5
Median age
$71,079
Median household income
$36,080
Per capita income
$130,346
Median home value
$971
Median monthly rent
66.7%
Home ownership
15.2%
Poverty rate
7.0%
Unemployment
80,053
Housing units
24.7%
Bachelor's or higher

Age distribution

Male Female
7,281
Under 5
7,602
7,248
5–9
7,567
8,886
10–14
9,277
8,013
15–19
8,366
7,420
20–24
7,746
15,574
25–34
16,259
15,872
35–44
16,571
14,829
45–54
15,482
8,193
55–59
8,553
8,446
60–64
8,818
12,046
65–74
12,576
5,486
75–84
5,728
2,472
85+
2,580
← Male
Female →

Age summary

GroupCount%
Under 1858,11423.1%
18 and over190,77776.9%
65 and over40,88816.9%
Median age39.5 years

Race & ethnicity

White 59.4%
Black or African American 28%
Two or more races 6.2%
Hispanic or Latino 3.1%
Asian 1.5%
Other race 1.4%
American Indian / Alaska Native 0.4%
GroupCount%
White152,62359.4%
Black or African American71,86228%
Two or more races15,8766.2%
Hispanic or Latino7,8383.1%
Asian3,8911.5%
Other race3,6651.4%
American Indian / Alaska Native9020.4%

Household income

Under $10k 6.3%
$10k–$15k 4.8%
$15k–$25k 8.8%
$25k–$35k 7.8%
$35k–$50k 12.4%
$50k–$75k 15.8%
$75k–$100k 14.7%
$100k–$150k 15.5%
$150k–$200k 7.9%
$200k+ 6.1%
Range% of households
Under $10k6.3%
$10k–$15k4.8%
$15k–$25k8.8%
$25k–$35k7.8%
$35k–$50k12.4%
$50k–$75k15.8%
$75k–$100k14.7%
$100k–$150k15.5%
$150k–$200k7.9%
$200k+6.1%
Median income$71,079

Housing

Home values

Under $50k 17.4%
$50k–$100k 23.3%
$100k–$150k 14.5%
$150k–$200k 13.5%
$200k–$300k 19.2%
$300k–$500k 9.9%
$500k–$1M 2.0%
$1M+ 0.2%

Housing overview

MetricValue
Median home value$130,346
Median rent / month$971
Owner occupied66.7%
Renter occupied33.3%
Vacant13.3%
Single-family detached71.8%
Large apartment buildings2.7%
Mobile homes6.4%
Median rooms5.8
Avg household size (owned)2.65

Year built

Era%
2020 or later0.2%
2010–20196.7%
2000–200913.3%
1990–199912.2%
1980–19899.8%
1970–197910.3%
1960–196911.1%
1950–195914.6%
1940–19495.5%
1939 or earlier16.3%

Bedrooms

Size% of units
No bedroom (studio)1.3%
1 bedroom8.3%
2 bedrooms26.7%
3 bedrooms42.6%
4 bedrooms16.8%
5+ bedrooms4.2%

Vehicles per household

Vehicles% of households
No vehicle8.2%
1 vehicle34.0%
2 vehicles35.8%
3 or more22.0%

Heating fuel

Fuel type%
Utility gas60.4%
Electricity30.1%
Propane / LP gas7.8%
Fuel oil0.3%
Wood0.7%
No fuel used0.3%

Households & families

Household typeCount%
Married-couple family43,40343.8%
Cohabiting couple5,7596.1%
Male householder, no spouse18,21817.9%
Female householder, no spouse30,23332.1%
Households with children under 1829,51430.8%
Households with seniors (65+)29,25330.6%
Average household size2.57

Marital status

StatusMaleFemale
Never married37.2%33.2%
Married45.8%42.3%
Separated2.7%2.1%
Widowed2.9%9.7%
Divorced11.4%12.8%

Education

Less than 9th grade 2.8%
Some HS, no diploma 6.5%
HS graduate 30.5%
Some college, no degree 24.7%
Associate's degree 10.8%
Bachelor's degree 14.6%
Graduate / professional 10.0%
Metric%
HS diploma or higher90.7%
Bachelor's or higher24.7%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool4,3447.8%
Kindergarten3,0154.3%
Elementary school27,01141.7%
High school13,85524.3%
College / grad school15,48421.9%

Employment

Industry of employment

Education & healthcare 20.9%
Professional & management 12.0%
Arts, food & hospitality 10.9%
Retail trade 10.6%
Manufacturing 9.4%
Transportation & utilities 7.9%
Finance & real estate 6.1%
Construction 5.6%
Public administration 5.6%
Other services 4.8%
Wholesale trade 2.6%
Information 2.0%
Agriculture & mining 1.6%

Occupation

Category%
Management, business & arts32.8%
Service20.7%
Sales & office21.6%
Natural resources & construction8.9%
Production & transportation16.0%

Employment type

Type%
Private sector82.0%
Government14.2%
Self-employed3.7%
Unpaid family workers0.1%

Commute

Method%
Drive alone79.1%
Carpool8.5%
Public transit2.0%
Walk1.6%
Other means1.0%
Avg commute (minutes)24.5

Poverty

All people 15.2%
Under 18 years 22.4%
18 and over 13.2%
Married-couple families 5.0%
Female-led households 26.4%

Income support

Source% of households
Social Security32.7%
Retirement income28.6%
Supplemental Security6.5%
Cash public assistance3.0%
Food stamps / SNAP18.2%

Health indicators

Condition%
High blood pressure36.9%
High cholesterol30.4%
Heart disease6.3%
Stroke3.7%
Asthma10.6%
Arthritis26.0%
Kidney disease3.2%
Pulmonary disease7.3%
Cancer6.1%
Behavior / access%
Binge drinking15.0%
No physical activity26.9%
Less than 7 hrs sleep35.0%
Fair or poor health17.0%
Poor mental health13.6%
Poor physical health10.7%
No health insurance12.3%
Visited doctor (checkup)80.2%
Visited dentist64.2%
Cholesterol screening89.0%
Teeth loss17.9%

Veterans & disability

VeteransCount%
Civilian veterans22,87711.4%
Disability%
Any disability16.3%
Under 184.1%
18–64 years15.3%
65 and over38.2%

Health insurance coverage

Type%
Private insurance66.0%
Public insurance42.3%
Uninsured under 193.6%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only234,00893.6%
Spanish3,3811.6%
Other Indo-European1,7170.9%
Asian & Pacific Islander4320.3%
Other languages8370.2%

Place of birth & citizenship

OriginCount%
Native born (US)241,32797.5%
Born in same state237,18496.2%
Born in different state143,19560.5%
Foreign born4,1431.3%
Naturalized citizen7,5642.5%
Not a US citizen4,75650.3%

Ancestry

AncestryCount%
Italian23,0709.3%
French19,5997.9%
Arab10,0044%
English1,9310.8%
Polish1,4420.6%
AncestryCount%
Irish7250.3%
Norwegian5940.2%
German5740.2%
Dutch3360.1%

Technology access

Metric% of households
Computer access38.8%
Internet access91.1%

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

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