In search of the correct zip code for Saint Louis MO? 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. Below are some of the zip codes in Saint Louis MO you might be interested in: - Postal code: 63101 - Postal code: 63102 - Zip code: 63103 - Zip code: 63104 - Postal code: 63105 The list goes on, as Saint Louis MO has numerous different zip codes depending on location you are interested in. If you require additional information about Saint Louis MO zip codes, please don't hesitate to ask.