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