63366 is zip code located in Ofallon, Missouri. The population is 47,464, making 63366 the largest zipcode in Ofallon and the 3rd largest in St. Charles County.
There are 11 public schools in 63366 with an average Homefacts rating of B. The total crime rate for Ofallon is very low , and there are 39 registered sex offenders residing in the zip code 63366. Unemployment in 63366 is low.
Zip codes within Ofallon include 63368.