Below is a list of Porthill ID zip codes. For your research we have also included Porthill Area Code, Time Zone, UTC and the local Boundary County FIPS Code. Each Porthill Idaho zip code has a center Longitude / Latitude point (the Porthill center is -116.49800109863 / 48.998199462891). For your convenience we have also indicated if that zip code in Porthill observes Daylight Savings time.