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Dupo, IL

Village in St. Clair County, Illinois. ZIP codes: 62239, 62240.

Population

3,879

Land area

6.4sq mi

People per sq mi

606

ZIP codes

2

Dupo and its ZIP codes

Full map

Dupo at a glance

  • Dupo is about 2.6 times as dense as Illinois as a whole.
  • The median household income is $61,644, 26% below the Illinois median of $83,390.
  • A typical owner-occupied home is valued at $113,800 (57% below Illinois) and median rent is $912 a month.

Local data for Dupo, IL

Counts from official public data

Housing and community stats

Dupo, IL, American Community Survey 2020-2024

Full profile

Median household income

$61,644

Poverty rate

8.5%

Median home value

$113,800

Median rent

$912/mo

Homeownership

65.4%

Bachelor's or higher

17.8%

Median age

42.9

Average commute

25.6 min

Largest reported origins and ancestries: German Americans (869), Irish Americans (604), Italian Americans (218).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for St. Clair County. PPP loans are for Dupo.

Details

Unemployment rate

3.9%

Aug 2026, -1.0 pts in a year

Average annual pay

$59,034

89,192 jobs, 2025

Income per person

$61,712

BEA, 2024

Federal spending

$2.6B

FY 2026, $10,147 per person

PPP loans

$11.8M

75 loans, 1,098 jobs reported

St. Clair County economyFederal spendingPPP loans

How people get to work

Dupo, IL, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone81.8%
  • Carpooled9.6%
  • Public transit0.0%
  • Walked1.1%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other1.5%
  • Worked from home6.1%

Average one-way commute: 25.6 minutes for people who do not work from home.

Environment and hazard risk

Dupo, IL, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively High

Top: heat wave

Storm events since 1996

829

Countywide, mostly thunderstorm wind

Flood insurance policies

1,007

1.0% of homes, county

July high / Jan low

89° / 22°F

42.8 inches of rain a year

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Dupo, IL, CDC PLACES estimates

All 40 measures

Obesity

37.1%

U.S. 33.3% +3.8 pts

Diabetes

11.3%

U.S. 12.1% -0.8 pts

Smoking

16.9%

U.S. 12.8% +4.1 pts

Uninsured (18-64)

8.2%

U.S. 11.1% -2.9 pts

ZIP codes in Dupo

2 in or overlapping Dupo. Population shown

·

Cities near Dupo

NameDistanceLand area (sq mi)
East CarondeletVillage1.9 mi1.2
Lemay, MOCensus-designated place3.7 mi4.1
Cahokia HeightsCity3.8 mi15.8
Bella Villa, MOCity4.1 mi0.1
ColumbiaCity4.3 mi10.6
St. George, MOCensus-designated place5.4 mi0.2
Mehlville, MOCensus-designated place5.4 mi7.5
Wilbur Park, MOVillage5.6 mi0.1
SaugetVillage5.8 mi4.6
Affton, MOCensus-designated place6.2 mi4.6
Green Park, MOCity6.4 mi1.3
Lakeshire, MOCity6.8 mi0.2
Concord, MOCensus-designated place7.5 mi5.5
Oakville, MOCensus-designated place7.5 mi15.9
Marlborough, MOVillage7.5 mi0.2
Shrewsbury, MOCity7.7 mi1.4

Frequently asked questions

What county is Dupo, IL in?
Dupo is in St. Clair County, Illinois.
What ZIP codes are in Dupo, IL?
ZIP codes in or overlapping Dupo include 62239, 62240.
What is the population of Dupo, IL?
About 3,879 people live in Dupo, based on American Community Survey 5-year estimates.
What cities are near Dupo?
Nearby places include East Carondelet (1.9 mi), Lemay, MO (3.7 mi), Cahokia Heights (3.8 mi), Bella Villa, MO (4.1 mi), Columbia (4.3 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023