Trying to find the right zip code for Saint Louis MO? Saint Louis MO zip codes 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 Saint Louis MO zip codes you might be interested in: - Zip code: 63101 - Zip code: 63102 - Postal code: 63103 - Postal code: 63104 - Postal code: 63105 The list goes on, as St. Louis has several different 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.