Below is a list of Boundary County ID zip codes. For your research we have also included Boundary County Area Code, Time Zone, UTC and the local County FIPS Code. Each Boundary County Idaho zip code has a center Longitude / Latitude point (the Boundary County center is -116.31700134277 / 48.811100006104). For your convenience we have also indicated if that zip code in Boundary County observes Daylight Savings time.