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Illinois ZIP Codes
Will County
Frankfort, IL
60423
60423 ZIP Code — Frankfort, IL
Will County, Illinois
ZIP code 60423 is located in
Frankfort ,
Illinois ,
within Will County .
It covers approximately 37.88 square miles and serves a population of
32,596 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 779/815 .
About ZIP code 60423
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $367,400. Owner-occupancy is high at 93%, well above the national average.
Median household income is $134,640. The poverty rate of 4% is below the national average.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 34 minutes is near the national average.
Educational attainment is high — 50% of residents hold a bachelor's degree or higher, well above the national average of 33%.
60423 ZIP code map
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Cities in ZIP code 60423
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Nearby ZIP codes
Demographics
updated 06/2026
Population
Total population
32,596
Population density
861 / sq mi
State FIPS
17
County FIPS
197
Geography
Land area
37.88 sq mi
Water area
0.00 sq mi
Latitude
41.4761
Longitude
-87.8392
Timezone
Central (CT)
Area code
779/815
Economics
updated 06/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
15.0%
25.0%
37.2%
$50k – $100k
24.5%
29.9%
29.6%
$100k – $200k
42.6%
34.1%
24.4%
Over $200k
17.8%
10.9%
8.8%
Demographics & statistics
$134,640
Median household income
$367,400
Median home value
$1,416
Median monthly rent
49.7%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 8,443 25.9%
18 and over 24,153 74.1%
65 and over 5,298 16.3%
Median age 42.5 years
Race & ethnicity
Black or African American
6.9%
Group Count %
White 26,381 76.9%
Two or more races 2,657 7.7%
Black or African American 2,351 6.9%
Hispanic or Latino 1,700 5%
Asian 912 2.7%
Other race 288 0.8%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
15.0%
25.0%
37.2%
$50k – $100k
24.5%
29.9%
29.6%
$100k – $200k
42.6%
34.1%
24.4%
Over $200k
17.8%
10.9%
8.8%
Range % of households
Under $10k 2.4%
$10k–$15k 0.7%
$15k–$25k 2.7%
$25k–$35k 3.0%
$35k–$50k 4.7%
$50k–$75k 11.1%
$75k–$100k 8.6%
$100k–$150k 22.8%
$150k–$200k 18.5%
$200k+ 25.6%
Median income $134,640
Housing
Housing overview
Metric Value
Median home value $367,400
Median rent / month $1,416
Owner occupied 92.8%
Renter occupied 7.2%
Vacant 4.1%
Single-family detached 80.6%
Large apartment buildings 0.1%
Mobile homes 2.5%
Median rooms 7.5
Avg household size (owned) 2.98
Year built
Era %
2020 or later 0.6%
2010–2019 8.4%
2000–2009 26.7%
1990–1999 19.4%
1980–1989 13.5%
1970–1979 20.9%
1960–1969 2.9%
1950–1959 2.3%
1940–1949 1.3%
1939 or earlier 4.1%
Bedrooms
Size % of units
No bedroom (studio) 0.2%
1 bedroom 0.9%
2 bedrooms 11.6%
3 bedrooms 44.4%
4 bedrooms 30.9%
5+ bedrooms 12.1%
Vehicles per household
Vehicles % of households
No vehicle 2.5%
1 vehicle 17.8%
2 vehicles 50.4%
3 or more 29.4%
Heating fuel
Fuel type %
Utility gas 92.5%
Electricity 6.0%
Propane / LP gas 1.1%
Wood 0.1%
Households & families
Household type Count %
Married-couple family 8,038 73.1%
Cohabiting couple 410 3.7%
Male householder, no spouse 930 8.5%
Female householder, no spouse 1,621 14.7%
Households with children under 18 4,386 39.9%
Households with seniors (65+) 3,600 32.7%
Average household size 2.95
Marital status
Status Male Female
Never married 26.2% 25.3%
Married 66.5% 61.5%
Separated 0.2% 0.5%
Widowed 2.2% 5.8%
Divorced 4.9% 7.0%
Education
Some college, no degree
17.3%
Graduate / professional
20.4%
Metric %
HS diploma or higher 97.4%
Bachelor's or higher 49.7%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 640 6.9%
Kindergarten 358 3.9%
Elementary school 3,904 42.3%
High school 2,535 27.5%
College / grad school 1,782 19.3%
Employment
Industry of employment
Education & healthcare
23.2%
Professional & management
13.0%
Finance & real estate
9.0%
Arts, food & hospitality
8.5%
Transportation & utilities
5.9%
Public administration
4.6%
Agriculture & mining
0.2%
Occupation
Category %
Management, business & arts 51.0%
Service 11.0%
Sales & office 20.6%
Natural resources & construction 8.4%
Production & transportation 9.0%
Employment type
Type %
Private sector 82.9%
Government 13.4%
Self-employed 3.3%
Unpaid family workers 0.4%
Commute
Method %
Drive alone 74.4%
Carpool 4.6%
Public transit 3.7%
Walk 0.7%
Work from home 15.6%
Other means 1.0%
Avg commute (minutes) 33.8
Poverty
Married-couple families
1.1%
Female-led households
18.5%
Income support
Source % of households
Social Security 29.1%
Retirement income 26.7%
Supplemental Security 1.6%
Cash public assistance 1.0%
Food stamps / SNAP 3.0%
Health indicators
Condition %
Obesity 33.0%
High blood pressure 29.4%
High cholesterol 31.9%
Diabetes 7.5%
Heart disease 4.6%
Stroke 2.1%
Asthma 8.9%
Arthritis 23.2%
Kidney disease 2.2%
Pulmonary disease 4.6%
Cancer 6.3%
Behavior / access %
Smoking 12.6%
Binge drinking 15.9%
No physical activity 19.7%
Less than 7 hrs sleep 31.9%
Depression 15.5%
Fair or poor health 9.3%
Poor mental health 10.7%
Poor physical health 7.2%
No health insurance 7.7%
Visited doctor (checkup) 78.9%
Visited dentist 74.6%
Cholesterol screening 92.2%
Teeth loss 8.0%
Veterans & disability
Veterans Count %
Civilian veterans 1,263 5.2%
Disability %
Any disability 7.4%
Under 18 1.4%
18–64 years 6.3%
65 and over 20.7%
Health insurance coverage
Type %
Private insurance 87.6%
Public insurance 19.4%
No insurance 3.4%
Uninsured under 19 2.3%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 31,085 95.4%
Spanish 430 1.4%
Other Indo-European 154 0.5%
Asian & Pacific Islander 221 0.7%
Other languages 22 0.1%
Place of birth & citizenship
Origin Count %
Native born (US) 30,540 93.7%
Born in same state 30,149 92.5%
Born in different state 25,857 79.3%
Foreign born 391 1.2%
Naturalized citizen 2,056 6.3%
Not a US citizen 1,525 74.2%
Ancestry
Ancestry Count %
Italian 7,414 22.7%
French 2,130 6.5%
Arab 1,218 3.7%
English 1,021 3.1%
Irish 676 2.1%
Ancestry Count %
Norwegian 673 2.1%
Polish 353 1.1%
Dutch 148 0.5%
German 109 0.3%
Technology access
Metric % of households
Computer access 33.7%
Internet access 97.3%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 60423
What city is ZIP code 60423 in?
ZIP code 60423 is primarily assigned to Frankfort, Illinois.
What county is ZIP code 60423 in?
ZIP code 60423 falls within Will County, Illinois.
Is ZIP code 60423 mostly owner-occupied?
93% of occupied units in ZIP code 60423 are owner-occupied, well above the national average.
How educated is the population of ZIP code 60423?
50% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What is the median household income in ZIP code 60423?
The median household income in ZIP code 60423 is $134,640, above the national median of ~$75,000.
What is the typical home value in ZIP code 60423?
The median home value in ZIP code 60423 is $367,400.
What timezone is ZIP code 60423 in?
ZIP code 60423 observes the CST timezone.
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