Below is a list of East Helena MT zip codes. For your research we have also included East Helena Area Code, Time Zone, UTC and the local Lewis And Clark County FIPS Code. Each East Helena Montana zip code has a center Longitude / Latitude point (the East Helena center is -111.91999816895 / 46.587799072266). For your convenience we have also indicated if that zip code in East Helena observes Daylight Savings time.