In search of the correct zip code for Saint Louis MO? The zip codes in Saint Louis MO vary depending on where you are. If you need zip codes in Saint Louis MO, you'll find several options to choose from. Here 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 - Zip code: 63105 The list goes on, as St. Louis has numerous various zip codes depending on location you are interested in. Feel free to ask for more specific details about Saint Louis MO zip codes.