Below is a list of Saint Mary MO zip codes. For your research we have also included Saint Mary Area Code, Time Zone, UTC and the local Sainte Genevieve County FIPS Code. Each Saint Mary Missouri zip code has a center Longitude / Latitude point (the Saint Mary center is -89.947700500488 / 37.878299713135). For your convenience we have also indicated if that zip code in Saint Mary observes Daylight Savings time.