In search of the correct zip code for Saint Louis MO? Zip codes in Saint Louis MO vary depending on the location. In case you are searching for zip codes in Saint Louis MO, you'll find several options to choose from. Below are some of Saint Louis MO zip codes you might be interested in: - Zip code: 63101 - Zip code: 63102 - Postal code: 63103 - Postal code: 63104 - Postal code: 63105 The list goes on, as St. Louis has several different zip codes depending on location you are interested in. Feel free to ask for more specific details about Saint Louis MO zip codes.