Dupo, IL ZIP Codes, Coordinates & Counties
Dupo, Illinois has 1 ZIP code in St. Clair county. The approximate center of Dupo is 38.526, -90.187. Dupo has about 20,597 known street addresses.
ZIP codes in Dupo, IL
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 62239 | St. Clair | 38.526 | -90.187 |
Counties Dupo spans
St. Clair
Most common streets in Dupo
Main, 2nd, 5th, 3rd, Columbia, 4th, State, Louisa, Stolle, Illinois
Frequently asked questions
What ZIP codes are in Dupo, IL?
Dupo, Illinois has 1 ZIP code, ranging from 62239 to 62239. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Dupo, IL in?
Dupo is in St. Clair county.
What are the latitude and longitude of Dupo, IL?
The approximate center of Dupo, Illinois is latitude 38.526, longitude -90.187. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Dupo, IL have?
Dupo has 1 ZIP code.
How many addresses are in Dupo, IL?
Dupo, Illinois has about 20,597 known street addresses in the sthan.io US address database.
What are the most common streets in Dupo, IL?
Some of the most common street names in Dupo are Main, 2nd, 5th, 3rd, Columbia, 4th.
What cities are near Dupo, IL?
Cities near Dupo include East Carondelet (1 mi), Columbia (6 mi), East Saint Louis (7 mi), Millstadt (7 mi), Lovejoy (9 mi).
Cities near Dupo
East Carondelet, IL (1 mi) Columbia, IL (6 mi) East Saint Louis, IL (7 mi) Millstadt, IL (7 mi) Lovejoy, IL (9 mi) Venice, IL (10 mi) Saint Louis, MO (10 mi) Fairview Heights, IL (11 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database