Trying to find the right zip code for Saint Louis MO? Zip codes in Saint Louis MO vary depending on where you are. If you need 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 - Postal code: 63104 - Postal code: 63105 The list goes on, as St. Louis has numerous various zip codes depending on the area you are interested in. Let me know if you need more specific information about Saint Louis MO zip codes.