Below is a list of Poston AZ zip codes. For your research we have also included Poston Area Code, Time Zone, UTC and the local La Paz County FIPS Code. Each Poston Arizona zip code has a center Longitude / Latitude point (the Poston center is -114.40299987793 / 33.991298675537). For your convenience we have also indicated if that zip code in Poston observes Daylight Savings time.