Below is a list of Barnhart MO zip codes. For your research we have also included Barnhart Area Code, Time Zone, UTC and the local Jefferson County FIPS Code. Each Barnhart Missouri zip code has a center Longitude / Latitude point (the Barnhart center is -90.398300170898 / 38.339298248291). For your convenience we have also indicated if that zip code in Barnhart observes Daylight Savings time.