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Illinois ZIP Codes
Monroe County
Columbia, IL
62236
62236 ZIP Code — Columbia, IL
Monroe County, Illinois
ZIP code 62236 is located in
Columbia ,
Illinois ,
within Monroe County .
It covers approximately 60.34 square miles and serves a population of
14,630 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 618 .
About ZIP code 62236
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 $292,000. Owner-occupancy is high at 85%, well above the national average.
Median household income is $109,904. The poverty rate of 5% 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 26 minutes is near the national average.
Educational attainment is high — 48% of residents hold a bachelor's degree or higher, well above the national average of 33%.
62236 ZIP code map
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Cities in ZIP code 62236
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Nearby ZIP codes
Demographics
updated 06/2026
Population
Total population
14,630
Population density
242 / sq mi
State FIPS
17
County FIPS
133
Geography
Land area
60.34 sq mi
Water area
3.01 sq mi
Latitude
38.4459
Longitude
-90.2120
Timezone
Central (CT)
Area code
618
Economics
updated 06/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
21.8%
26.5%
37.2%
$50k – $100k
24.4%
29.3%
29.6%
$100k – $200k
37.9%
33.9%
24.4%
Over $200k
15.9%
10.3%
8.8%
Demographics & statistics
$109,904
Median household income
$292,000
Median home value
$1,047
Median monthly rent
47.8%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 3,716 25.4%
18 and over 10,914 74.6%
65 and over 2,270 15.5%
Median age 41.5 years
Race & ethnicity
Black or African American
0.7%
Group Count %
White 13,997 93.7%
Hispanic or Latino 313 2.1%
Other race 266 1.8%
Two or more races 222 1.5%
Black or African American 105 0.7%
Asian 40 0.3%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
21.8%
26.5%
37.2%
$50k – $100k
24.4%
29.3%
29.6%
$100k – $200k
37.9%
33.9%
24.4%
Over $200k
15.9%
10.3%
8.8%
Range % of households
Under $10k 3.8%
$10k–$15k 1.0%
$15k–$25k 4.1%
$25k–$35k 3.6%
$35k–$50k 7.1%
$50k–$75k 11.4%
$75k–$100k 12.2%
$100k–$150k 22.9%
$150k–$200k 15.1%
$200k+ 18.8%
Median income $109,904
Housing
Housing overview
Metric Value
Median home value $292,000
Median rent / month $1,047
Owner occupied 85.3%
Renter occupied 14.7%
Vacant 6.3%
Single-family detached 83.8%
Large apartment buildings 1.7%
Mobile homes 1.1%
Median rooms 6.8
Avg household size (owned) 2.79
Year built
Era %
2020 or later 0.6%
2010–2019 12.8%
2000–2009 20.7%
1990–1999 15.5%
1980–1989 13.8%
1970–1979 9.1%
1960–1969 8.8%
1950–1959 6.0%
1940–1949 5.5%
1939 or earlier 7.2%
Bedrooms
Size % of units
No bedroom (studio) 0.0%
1 bedroom 3.0%
2 bedrooms 21.8%
3 bedrooms 45.0%
4 bedrooms 24.8%
5+ bedrooms 5.4%
Vehicles per household
Vehicles % of households
No vehicle 3.0%
1 vehicle 25.4%
2 vehicles 42.5%
3 or more 29.1%
Heating fuel
Fuel type %
Utility gas 46.8%
Electricity 38.3%
Propane / LP gas 14.7%
Fuel oil 0.2%
Households & families
Household type Count %
Married-couple family 3,409 62.1%
Cohabiting couple 228 4.2%
Male householder, no spouse 643 11.7%
Female householder, no spouse 1,207 22.0%
Households with children under 18 2,072 37.8%
Households with seniors (65+) 1,568 28.6%
Average household size 2.65
Marital status
Status Male Female
Never married 27.8% 21.5%
Married 63.5% 60.1%
Separated 0.3% 0.7%
Widowed 1.6% 7.6%
Divorced 6.7% 10.2%
Education
Some college, no degree
20.0%
Graduate / professional
20.0%
Metric %
HS diploma or higher 97.0%
Bachelor's or higher 47.8%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 268 7.5%
Kindergarten 248 7.0%
Elementary school 1,570 44.2%
High school 905 25.5%
College / grad school 561 15.8%
Employment
Industry of employment
Education & healthcare
26.9%
Professional & management
14.2%
Finance & real estate
7.9%
Arts, food & hospitality
7.1%
Public administration
4.1%
Transportation & utilities
3.4%
Agriculture & mining
2.9%
Occupation
Category %
Management, business & arts 51.9%
Service 14.5%
Sales & office 21.2%
Natural resources & construction 6.8%
Production & transportation 5.6%
Employment type
Type %
Private sector 80.4%
Government 14.2%
Self-employed 5.4%
Unpaid family workers 0.0%
Commute
Method %
Drive alone 85.9%
Carpool 4.0%
Public transit 0.2%
Walk 0.3%
Work from home 9.7%
Other means 0.0%
Avg commute (minutes) 26.1
Poverty
Married-couple families
2.1%
Female-led households
8.9%
Income support
Source % of households
Social Security 29.8%
Retirement income 29.0%
Supplemental Security 3.5%
Cash public assistance 1.6%
Food stamps / SNAP 5.5%
Health indicators
Condition %
Obesity 34.2%
High blood pressure 29.9%
High cholesterol 32.5%
Diabetes 8.1%
Heart disease 5.4%
Stroke 2.4%
Asthma 9.0%
Arthritis 23.9%
Kidney disease 2.4%
Pulmonary disease 5.4%
Cancer 7.0%
Behavior / access %
Smoking 13.7%
Binge drinking 16.3%
No physical activity 19.1%
Less than 7 hrs sleep 29.8%
Depression 16.6%
Fair or poor health 10.2%
Poor mental health 11.5%
Poor physical health 7.8%
No health insurance 7.8%
Visited doctor (checkup) 77.1%
Visited dentist 73.1%
Cholesterol screening 91.5%
Teeth loss 10.2%
Veterans & disability
Veterans Count %
Civilian veterans 818 7.5%
Disability %
Any disability 9.2%
Under 18 2.8%
18–64 years 7.5%
65 and over 26.9%
Health insurance coverage
Type %
Private insurance 86.2%
Public insurance 24.3%
No insurance 2.0%
Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 13,765 94.1%
Spanish 68 0.5%
Other Indo-European 68 0.5%
Asian & Pacific Islander 0 0.0%
Other languages 0 0.0%
Place of birth & citizenship
Origin Count %
Native born (US) 14,460 98.8%
Born in same state 14,395 98.4%
Born in different state 6,959 47.6%
Foreign born 65 0.4%
Naturalized citizen 170 1.2%
Not a US citizen 160 94.1%
Ancestry
Ancestry Count %
French 1,805 12.3%
Italian 1,644 11.2%
Arab 955 6.5%
Polish 201 1.4%
Dutch 96 0.7%
Ancestry Count %
English 84 0.6%
Norwegian 73 0.5%
Irish 56 0.4%
German 21 0.1%
Technology access
Metric % of households
Computer access 37.5%
Internet access 96.2%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 62236
What city is ZIP code 62236 in?
ZIP code 62236 is primarily assigned to Columbia, Illinois.
What county is ZIP code 62236 in?
ZIP code 62236 falls within Monroe County, Illinois.
Is ZIP code 62236 mostly owner-occupied?
85% of occupied units in ZIP code 62236 are owner-occupied, well above the national average.
How educated is the population of ZIP code 62236?
48% 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 62236?
The median household income in ZIP code 62236 is $109,904, above the national median of ~$75,000.
What is the population of ZIP code 62236?
ZIP code 62236 has an estimated population of 14,630 residents, with a density of 242 people per square mile.
What timezone is ZIP code 62236 in?
ZIP code 62236 observes the CST timezone.
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