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