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Illinois ZIP Codes
Williamson County
Colp, IL
62921
62921 ZIP Code — Colp, IL
Williamson County, Illinois
ZIP code 62921 is located in
Colp ,
Illinois ,
within Williamson County .
It covers approximately 0.54 square miles and serves a population of
243 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 618 .
About ZIP code 62921
The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $73,400. Owner-occupancy sits near the national average at 69%.
The dominant occupation class is sales and office, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.
College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.
Health indicators show elevated rates of smoking (21%) compared to national benchmarks.
Notable community characteristics include a notable veteran presence at 12% of civilians, above the national average of 7%.
Overall, ZIP code 62921 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a strong veteran community, and elevated reliance on food assistance.
62921 ZIP code map
View map of 62921
Cities in ZIP code 62921
Below are the cities the US Postal Service accepts for ZIP code 62921. Using any city not on this list may result in mail delivery delays.
City
Status
Colp
Acceptable
Demographics
updated 05/2026
Population
Total population
243
Population density
450 / sq mi
State FIPS
17
County FIPS
199
Geography
Land area
0.54 sq mi
Water area
0.01 sq mi
Latitude
37.8057
Longitude
-89.0836
Timezone
Central (CT)
Area code
618
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
86.8%
48.6%
37.2%
$50k – $100k
10.3%
29.7%
29.6%
$100k – $200k
2.9%
18.2%
24.4%
Over $200k
0.0%
3.5%
8.8%
Demographics & statistics
$0
Median household income
15.1%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 60 24.7% 18 and over 183 75.3% 65 and over 36 14.8% Median age 38.6 years
Race & ethnicity
Black or African American
25.1%
Group Count % White 165 67.9% Black or African American 61 25.1% Two or more races 17 7%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
86.8%
48.6%
37.2%
$50k – $100k
10.3%
29.7%
29.6%
$100k – $200k
2.9%
18.2%
24.4%
Over $200k
0.0%
3.5%
8.8%
Range % of households Under $10k 23.3% $10k–$15k 6.8% $15k–$25k 14.6% $25k–$35k 5.8% $35k–$50k 18.4% $50k–$75k 5.8% $75k–$100k 6.8% $100k–$150k 6.8% $150k–$200k 2.9% $200k+ 8.7% Median income $0
Housing
Housing overview
Metric Value Median home value $73,400 Median rent / month $0 Owner occupied 68.9% Renter occupied 31.1% Vacant 29.9% Single-family detached 75.5% Large apartment buildings 0.0% Mobile homes 11.6% Median rooms 4.9 Avg household size (owned) 2.27
Year built
Era % 2020 or later 0.0% 2010–2019 1.4% 2000–2009 12.2% 1990–1999 5.4% 1980–1989 21.1% 1970–1979 8.2% 1960–1969 0.0% 1950–1959 4.8% 1940–1949 6.8% 1939 or earlier 40.1%
Bedrooms
Size % of units No bedroom (studio) 1.4% 1 bedroom 0.0% 2 bedrooms 40.8% 3 bedrooms 52.4% 4 bedrooms 5.4% 5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households No vehicle 9.7% 1 vehicle 37.9% 2 vehicles 26.2% 3 or more 26.2%
Heating fuel
Fuel type % Utility gas 54.4% Electricity 42.7% Propane / LP gas 1.9% Wood 1.0%
Households & families
Household type Count % Married-couple family 40 38.8% Cohabiting couple 18 17.5% Male householder, no spouse 26 25.2% Female householder, no spouse 19 18.4% Households with children under 18 30 29.1% Households with seniors (65+) 30 29.1% Average household size 2.36
Marital status
Status Male Female Never married 24.0% 29.1% Married 43.0% 45.3% Separated 0.0% 7.0% Widowed 3.0% 7.0% Divorced 30.0% 11.6%
Education
Some college, no degree
23.7%
Graduate / professional
8.6%
Metric % HS diploma or higher 92.8% Bachelor's or higher 15.1%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 13 26.0% Kindergarten 0 0.0% Elementary school 13 26.0% High school 14 28.0% College / grad school 10 20.0%
Employment
Industry of employment
Education & healthcare
26.7%
Professional & management
17.4%
Public administration
7.0%
Transportation & utilities
4.7%
Agriculture & mining
3.5%
Arts, food & hospitality
2.3%
Finance & real estate
1.2%
Occupation
Category % Management, business & arts 26.7% Service 11.6% Sales & office 31.4% Natural resources & construction 15.1% Production & transportation 15.1%
Employment type
Type % Private sector 76.7% Government 23.3% Self-employed 0.0% Unpaid family workers 0.0%
Commute
Method % Drive alone 84.2% Carpool 13.2% Public transit 0.0% Walk 0.0% Work from home 2.6% Other means 0.0% Avg commute (minutes) 25.9
Poverty
Married-couple families
37.5%
Female-led households
100.0%
Income support
Source % of households Social Security 29.1% Retirement income 11.7% Supplemental Security 16.5% Cash public assistance 1.9% Food stamps / SNAP 34.0%
Health indicators
Condition % Obesity 38.6% High blood pressure 41.6% High cholesterol 34.4% Diabetes 14.5% Heart disease 7.5% Stroke 4.4% Asthma 11.0% Arthritis 30.1% Kidney disease 3.7% Pulmonary disease 8.4% Cancer 6.9%
Behavior / access % Smoking 20.5% Binge drinking 12.8% No physical activity 29.5% Less than 7 hrs sleep 35.5% Depression 17.2% Fair or poor health 19.0% Poor mental health 13.6% Poor physical health 12.0% No health insurance 12.2% Visited doctor (checkup) 80.0% Visited dentist 58.9% Cholesterol screening 89.9% Teeth loss 18.7%
Veterans & disability
Veterans Count % Civilian veterans 21 11.5%
Disability % Any disability 12.8% Under 18 0.0% 18–64 years 7.5% 65 and over 55.6%
Health insurance coverage
Type % Private insurance 51.9% Public insurance 57.2% No insurance 3.7% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 201 82.7% Spanish 0 0.0% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 243 100.0% Born in same state 243 100.0% Born in different state 215 88.5% Foreign born 0 0.0% Naturalized citizen 0 0.0% Not a US citizen 0 0.0%
Ancestry
Ancestry Count % Italian 33 13.6%
Ancestry Count % French 18 7.4%
Technology access
Metric % of households Computer access 42.4% Internet access 87.4%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 62921
What city is ZIP code 62921 in?
ZIP code 62921 is primarily assigned to Colp, Illinois.
What county is ZIP code 62921 in?
ZIP code 62921 falls within Williamson County, Illinois.
What is the poverty rate in ZIP code 62921?
55% of residents in ZIP code 62921 live below the poverty line, above the national average.
Does ZIP code 62921 have a large veteran population?
12% of civilians in ZIP code 62921 are veterans, above the national average of ~7%.
What is the typical home value in ZIP code 62921?
The median home value in ZIP code 62921 is $73,400.
What is the population of ZIP code 62921?
ZIP code 62921 has an estimated population of 243 residents, with a density of 454 people per square mile.
What timezone is ZIP code 62921 in?
ZIP code 62921 observes the CST timezone.
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