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Illinois ZIP Codes
Grundy County
South Wilmington, IL
60474
60474 ZIP Code — South Wilmington, IL
Grundy County, Illinois
ZIP code 60474 is located in
South Wilmington ,
Illinois ,
within Grundy County .
It covers approximately 5.37 square miles and serves a population of
684 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 815 .
About ZIP code 60474
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $154,100. Owner-occupancy is high at 89%, well above the national average.
Median household income is $87,188. 34% of households receive Social Security income, suggesting a notable retiree or disability population.
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.
College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.
Overall, ZIP code 60474 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.
60474 ZIP code map
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Cities in ZIP code 60474
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Demographics
updated 06/2026
Population
Total population
684
Population density
127 / sq mi
State FIPS
17
County FIPS
063
Geography
Land area
5.37 sq mi
Water area
0.65 sq mi
Latitude
41.1720
Longitude
-88.2843
Timezone
Central (CT)
Area code
815
Economics
updated 06/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
33.0%
30.6%
37.2%
$50k – $100k
33.6%
34.2%
29.6%
$100k – $200k
28.0%
29.6%
24.4%
Over $200k
5.3%
5.6%
8.8%
Demographics & statistics
$87,188
Median household income
$154,100
Median home value
$1,225
Median monthly rent
14.8%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 146 21.3% 18 and over 538 78.7% 65 and over 127 18.6% Median age 41.8 years
Race & ethnicity
Group Count % White 670 97.7% Asian 7 1% Two or more races 7 1% Hispanic or Latino 2 0.3%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
33.0%
30.6%
37.2%
$50k – $100k
33.6%
34.2%
29.6%
$100k – $200k
28.0%
29.6%
24.4%
Over $200k
5.3%
5.6%
8.8%
Range % of households Under $10k 3.6% $10k–$15k 3.2% $15k–$25k 7.5% $25k–$35k 7.1% $35k–$50k 10.3% $50k–$75k 8.9% $75k–$100k 13.2% $100k–$150k 24.2% $150k–$200k 12.8% $200k+ 9.3% Median income $87,188
Housing
Housing overview
Metric Value Median home value $154,100 Median rent / month $1,225 Owner occupied 89.3% Renter occupied 10.7% Vacant 14.8% Single-family detached 97.6% Large apartment buildings 0.0% Mobile homes 1.8% Median rooms 5.8 Avg household size (owned) 2.56
Year built
Era % 2020 or later 0.6% 2010–2019 0.0% 2000–2009 7.9% 1990–1999 9.4% 1980–1989 7.3% 1970–1979 8.8% 1960–1969 21.5% 1950–1959 13.9% 1940–1949 9.7% 1939 or earlier 20.9%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 3.6% 2 bedrooms 37.0% 3 bedrooms 50.3% 4 bedrooms 9.1% 5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households No vehicle 3.2% 1 vehicle 26.0% 2 vehicles 39.9% 3 or more 31.0%
Heating fuel
Fuel type % Utility gas 92.5% Electricity 5.7% Propane / LP gas 1.8%
Households & families
Household type Count % Married-couple family 155 55.2% Cohabiting couple 15 5.3% Male householder, no spouse 49 17.4% Female householder, no spouse 62 22.1% Households with children under 18 57 20.3% Households with seniors (65+) 90 32.0% Average household size 2.43
Marital status
Status Male Female Never married 39.5% 12.7% Married 52.2% 58.7% Separated 0.3% 0.0% Widowed 1.3% 12.7% Divorced 6.7% 15.8%
Education
Some college, no degree
25.1%
Graduate / professional
4.8%
Metric % HS diploma or higher 91.8% Bachelor's or higher 14.8%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 3 2.9% Kindergarten 3 2.9% Elementary school 71 67.6% High school 24 22.9% College / grad school 4 3.8%
Employment
Industry of employment
Education & healthcare
26.8%
Transportation & utilities
8.0%
Public administration
4.5%
Arts, food & hospitality
3.5%
Finance & real estate
2.5%
Professional & management
1.3%
Agriculture & mining
1.0%
Occupation
Category % Management, business & arts 27.7% Service 9.6% Sales & office 16.9% Natural resources & construction 21.3% Production & transportation 24.5%
Employment type
Type % Private sector 86.3% Government 13.7% Self-employed 0.0% Unpaid family workers 0.0%
Commute
Method % Drive alone 94.0% Carpool 2.3% Public transit 0.0% Walk 0.0% Work from home 3.7% Other means 0.0% Avg commute (minutes) 33.6
Poverty
Married-couple families
3.9%
Female-led households
58.8%
Income support
Source % of households Social Security 33.8% Retirement income 37.4% Supplemental Security 4.3% Cash public assistance 1.1% Food stamps / SNAP 5.3%
Health indicators
Condition % Obesity 35.5% High blood pressure 32.3% High cholesterol 32.5% Diabetes 9.5% Heart disease 6.6% Stroke 3.0% Asthma 9.6% Arthritis 26.6% Kidney disease 2.8% Pulmonary disease 7.4% Cancer 6.8%
Behavior / access % Smoking 19.4% Binge drinking 16.6% No physical activity 25.1% Less than 7 hrs sleep 33.5% Depression 18.3% Fair or poor health 14.0% Poor mental health 13.4% Poor physical health 10.0% No health insurance 11.5% Visited doctor (checkup) 75.7% Visited dentist 62.3% Cholesterol screening 88.5% Teeth loss 14.6%
Veterans & disability
Veterans Count % Civilian veterans 36 6.7%
Disability % Any disability 14.2% Under 18 1.4% 18–64 years 11.7% 65 and over 37.0%
Health insurance coverage
Type % Private insurance 84.2% Public insurance 27.3% No insurance 6.4% Uninsured under 19 1.3%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 636 93.0% Spanish 3 0.5% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 3 0.5%
Place of birth & citizenship
Origin Count % Native born (US) 677 99.0% Born in same state 677 99.0% Born in different state 618 90.4% Foreign born 0 0.0% Naturalized citizen 7 1.0% Not a US citizen 7 100.0%
Ancestry
Ancestry Count % Italian 131 19.2% French 55 8% Polish 39 5.7% Arab 26 3.8%
Ancestry Count % German 8 1.2% Dutch 8 1.2% English 4 0.6% Norwegian 4 0.6%
Technology access
Metric % of households Computer access 41.1% Internet access 88.3%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 60474
What city is ZIP code 60474 in?
ZIP code 60474 is primarily assigned to South Wilmington, Illinois.
What county is ZIP code 60474 in?
ZIP code 60474 falls within Grundy County, Illinois.
Is ZIP code 60474 mostly owner-occupied?
89% of occupied units in ZIP code 60474 are owner-occupied, well above the national average.
How educated is the population of ZIP code 60474?
15% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
What is the typical home value in ZIP code 60474?
The median home value in ZIP code 60474 is $154,100.
What is the population of ZIP code 60474?
ZIP code 60474 has an estimated population of 684 residents, with a density of 127 people per square mile.
What timezone is ZIP code 60474 in?
ZIP code 60474 observes the CST timezone.
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