Below is a list of Jennings MO zip codes. For your research we have also included Jennings Area Code, Time Zone, UTC and the local Saint Louis County FIPS Code. Each Jennings Missouri zip code has a center Longitude / Latitude point (the Jennings center is -90.261596679688 / 38.743598937988). For your convenience we have also indicated if that zip code in Jennings observes Daylight Savings time.