O'Fallon, IL ZIP Codes, Coordinates & Counties
O'Fallon, Illinois has 1 ZIP code in St. Clair county. The approximate center of O'Fallon is 38.603, -89.916. O'Fallon has about 102 known street addresses.
ZIP codes in O'Fallon, IL
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 62269 | St. Clair | 38.603 | -89.916 |
Counties O'Fallon spans
St. Clair
Most common streets in O'Fallon
Howard, Corporate
Frequently asked questions
What ZIP codes are in O'Fallon, IL?
O'Fallon, Illinois has 1 ZIP code, ranging from 62269 to 62269. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is O'Fallon, IL in?
O'Fallon is in St. Clair county.
What are the latitude and longitude of O'Fallon, IL?
The approximate center of O'Fallon, Illinois is latitude 38.603, longitude -89.916. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does O'Fallon, IL have?
O'Fallon has 1 ZIP code.
How many addresses are in O'Fallon, IL?
O'Fallon, Illinois has about 102 known street addresses in the sthan.io US address database.
What are the most common streets in O'Fallon, IL?
Some of the most common street names in O'Fallon are Howard, Corporate.
What cities are near O'Fallon, IL?
Cities near O'Fallon include Caseyville (5 mi), Fairview Heights (5 mi), Lebanon (5 mi), Scott Air Force Base (5 mi), Belleville (7 mi).
Cities near O'Fallon
Caseyville, IL (5 mi) Fairview Heights, IL (5 mi) Lebanon, IL (5 mi) Scott Air Force Base, IL (5 mi) Belleville, IL (7 mi) Collinsville, IL (7 mi) Troy, IL (7 mi) Maryville, IL (9 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database