Ofallon zip code
Zip code in Ofallon, MO
The location Ofallon belongs to St. Charles County, state of Missouri. Ofallon has 3 zip codes which you can see in the following table.
The location name Ofallon is listed as unacceptable by the US Postal Service so any mailing should avoid it. Instead you can use O Fallon, the official name of the location. You can also use any of the following names: Cottleville, Dardenne Pr, Dardenne Prairie, Saint Paul, Saint Peters.
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