Dupo ZIP Code List — Saint Clair County, IL

There is one unique ZIP code in Dupo, Illinois and it is 62239. Area code: 618.

ZIP codes

8.55

sq mi land

0.19

sq mi water

618

area code

Dupo, IL ZIP code map

About Dupo, IL

Dupo, Illinois, is a quaint village located in Saint Clair County, known for its close-knit community and rich history. Nestled about 15 miles southeast of St. Louis, Missouri, it offers a serene environment away from the hustle and bustle of urban life. The village has a unique charm that attracts both residents and visitors alike, providing a blend of suburban comfort and easy access to metropolitan amenities.

Location & geography

Dupo sits on a land area of 8.55 square miles, surrounded by the picturesque landscapes of the Midwest. The village has a small water area of 0.19 square miles, giving it a cozy, rural feel while still being close to larger cities like Belleville and East Carondelet, which are only a few miles away. Its location affords residents beautiful views of rolling hills and a tranquil environment, making it an appealing place to call home.

Community & economy

The community of Dupo is characterized by its friendly atmosphere and strong sense of belonging among residents. Many local industries contribute to the town's economy, including manufacturing and retail businesses, which provide job opportunities for locals. Daily life here includes outdoor activities, various community events, and a commitment to preserving the village's rich history.

Transportation

Dupo is conveniently connected by major highways, primarily via Illinois Route 3, which facilitates easy travel to neighboring cities. The nearest named airport is the MidAmerica St. Louis Airport, approximately 10 miles away, offering regional air service. Public transit options are limited, but local commuters often rely on personal vehicles for transportation.

History

Dupo was founded in the late 19th century and has historically been known for its railroad industry, which played a pivotal role in its early economic development. Throughout the years, the village has evolved while maintaining its small-town charm, and several notable events have shaped its character. While primarily residential, Dupo's close ties to neighboring urban centers have influenced its growth and community dynamics.

Did you know?

One little-known fact about Dupo is that it has been home to various small businesses and family-owned enterprises that have thrived despite the proximity to large cities. Additionally, while it may be small, the village hosts several community events throughout the year, promoting local culture and engagement.

ZIP codes for Dupo, IL (1)

ZIP code	City	County	Map
62239	Dupo	Saint Clair	View map

Demographics & statistics

4,076

Population

44.0

Median age

$64,219

Median household income

$33,115

Per capita income

$91,600

Median home value

$905

Median monthly rent

65.6%

Home ownership

8.4%

Poverty rate

2.1%

Unemployment

1,181

Housing units

19.1%

Bachelor's or higher

Age distribution

Male Female

124

Under 5

136

109

5–9

120

10–14

105

15–19

115

131

20–24

145

280

25–34

307

245

35–44

269

311

45–54

342

176

55–59

193

143

60–64

158

184

65–74

202

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	714	17.5%
18 and over	3,362	82.5%
65 and over	565	13.9%
Median age	44.0 years

Race & ethnicity

White 94.3%

Black or African American 3%

Two or more races 2.3%

Hispanic or Latino 0.4%

Group	Count	%
White	3,860	94.3%
Black or African American	122	3%
Two or more races	94	2.3%
Hispanic or Latino	17	0.4%

Household income

Under $10k 2.7%

$10k–$15k 4.1%

$15k–$25k 4.3%

$25k–$35k 12.4%

$35k–$50k 10.8%

$50k–$75k 24.3%

$75k–$100k 16.8%

$100k–$150k 15.4%

$150k–$200k 4.5%

$200k+ 4.8%

Range	% of households
Under $10k	2.7%
$10k–$15k	4.1%
$15k–$25k	4.3%
$25k–$35k	12.4%
$35k–$50k	10.8%
$50k–$75k	24.3%
$75k–$100k	16.8%
$100k–$150k	15.4%
$150k–$200k	4.5%
$200k+	4.8%
Median income	$64,219

Housing

Home values

Under $50k 23.0%

$50k–$100k 33.0%

$100k–$150k 25.8%

$150k–$200k 15.0%

$200k–$300k 3.2%

Housing overview

Metric	Value
Median home value	$91,600
Median rent / month	$905
Owner occupied	65.6%
Renter occupied	34.4%
Vacant	2.7%
Single-family detached	69.1%
Large apartment buildings	0.0%
Mobile homes	11.7%
Median rooms	5.5
Avg household size (owned)	2.41

Year built

Era	%
2020 or later	0.0%
2010–2019	3.7%
2000–2009	8.1%
1990–1999	19.8%
1980–1989	12.0%
1970–1979	3.7%
1960–1969	11.7%
1950–1959	9.8%
1940–1949	4.3%
1939 or earlier	26.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.6%
2 bedrooms	52.1%
3 bedrooms	35.4%
4 bedrooms	7.2%
5+ bedrooms	3.6%

Vehicles per household

Vehicles	% of households
No vehicle	3.3%
1 vehicle	36.1%
2 vehicles	39.3%
3 or more	21.3%

Heating fuel

Fuel type	%
Utility gas	53.8%
Electricity	42.7%
Propane / LP gas	3.5%

Households & families

Household type	Count	%
Married-couple family	678	39.3%
Cohabiting couple	238	13.8%
Male householder, no spouse	296	17.1%
Female householder, no spouse	514	29.8%
Households with children under 18	558	32.3%
Households with seniors (65+)	397	23.0%
Average household size	2.36

Marital status

Status	Male	Female
Never married	33.0%	33.0%
Married	42.2%	35.3%
Separated	2.3%	2.7%
Widowed	2.3%	9.2%
Divorced	20.3%	19.7%

Education

Less than 9th grade 0.5%

Some HS, no diploma 9.1%

HS graduate 47.0%

Some college, no degree 16.2%

Associate's degree 8.1%

Bachelor's degree 14.9%

Graduate / professional 4.2%

Metric	%
HS diploma or higher	90.4%
Bachelor's or higher	19.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	16	2.5%
Kindergarten	84	13.2%
Elementary school	226	35.6%
High school	171	27.0%
College / grad school	137	21.6%

Employment

Industry of employment

Education & healthcare 19.0%

Manufacturing 14.3%

Professional & management 13.3%

Arts, food & hospitality 10.8%

Retail trade 8.7%

Construction 7.8%

Finance & real estate 7.2%

Public administration 5.7%

Transportation & utilities 4.4%

Wholesale trade 4.1%

Other services 3.4%

Information 1.3%

Occupation

Category	%
Management, business & arts	27.2%
Service	19.9%
Sales & office	19.8%
Natural resources & construction	9.9%
Production & transportation	23.1%

Employment type

Type	%
Private sector	81.8%
Government	12.6%
Self-employed	5.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	88.4%
Carpool	6.8%
Public transit	0.0%
Walk	0.0%
Other means	0.5%
Avg commute (minutes)	25.6

Poverty

All people 8.4%

Under 18 years 6.0%

18 and over 8.9%

Married-couple families 1.3%

Female-led households 30.8%

Income support

Source	% of households
Social Security	23.9%
Retirement income	30.8%
Supplemental Security	3.2%
Cash public assistance	5.0%
Food stamps / SNAP	14.6%

Health indicators

Condition	%
High blood pressure	34.4%
High cholesterol	31.2%
Heart disease	6.4%
Stroke	3.2%
Asthma	10.5%
Arthritis	26.5%
Kidney disease	2.9%
Pulmonary disease	8.5%
Cancer	6.0%

Behavior / access	%
Binge drinking	16.5%
No physical activity	27.3%
Less than 7 hrs sleep	33.7%
Fair or poor health	16.7%
Poor mental health	14.8%
Poor physical health	11.3%
No health insurance	12.4%
Visited doctor (checkup)	77.6%
Visited dentist	62.2%
Cholesterol screening	86.6%
Teeth loss	18.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	222	6.6%

Disability	%
Any disability	15.0%
Under 18	2.7%
18–64 years	15.2%
65 and over	29.7%

Health insurance coverage

Type	%
Private insurance	60.2%
Public insurance	42.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,816	93.6%
Spanish	28	0.7%
Other Indo-European	0	0.0%
Asian & Pacific Islander	28	0.7%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,000	98.1%
Born in same state	3,987	97.8%
Born in different state	2,206	54.1%
Foreign born	13	0.3%
Naturalized citizen	76	1.9%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	644	15.8%
French	517	12.7%

Ancestry	Count	%
Arab	160	3.9%
English	47	1.2%

Technology access

Metric	% of households
Computer access	42.3%
Internet access	92.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Dupo, IL?

Dupo, IL has one ZIP code: 62239.

What is the main ZIP code for Dupo, IL?

The primary ZIP code for Dupo, IL is 62239. The city uses area code 618 for phone service.

What county is Dupo, IL in?

Dupo is located in Saint Clair County, Illinois.

How many ZIP codes are in Dupo, IL?

Dupo, IL has 1 ZIP code.

What is the ZIP code for the downtown area of Dupo, Illinois?

The downtown area of Dupo, Illinois is located in ZIP code 62239, which serves as the primary commercial and civic center of this small Saint Clair County municipality.

Which single ZIP code covers the entire city of Dupo, IL?

Dupo, Illinois is entirely served by ZIP code 62239, making it a single-ZIP code community in Saint Clair County with the 618 area code.