Below is a list of Houstonia MO zip codes. For your research we have also included Houstonia Area Code, Time Zone, UTC and the local Pettis County FIPS Code. Each Houstonia Missouri zip code has a center Longitude / Latitude point (the Houstonia center is -93.358200073242 / 38.898899078369). For your convenience we have also indicated if that zip code in Houstonia observes Daylight Savings time.