Below is a list of Fallon MT zip codes. For your research we have also included Fallon Area Code, Time Zone, UTC and the local Prairie County FIPS Code. Each Fallon Montana zip code has a center Longitude / Latitude point (the Fallon center is -105.11799621582 / 46.835800170898). For your convenience we have also indicated if that zip code in Fallon observes Daylight Savings time.