In search of the correct zip code for Saint Louis MO? The zip codes in Saint Louis MO vary depending on the location. If you need zip codes in Saint Louis MO, you'll find several options to choose from. Below are some of the zip codes in Saint Louis MO you might be interested in: - Zip code: 63101 - Zip code: 63102 - Postal code: 63103 - Zip code: 63104 - Postal code: 63105 The list goes on, as St. Louis has numerous various zip codes depending on location you are interested in. Let me know if you need more specific information about Saint Louis MO zip codes.