Below is a list of Portage IN zip codes. For your research we have also included Portage Area Code, Time Zone, UTC and the local Porter County FIPS Code. Each Portage Indiana zip code has a center Longitude / Latitude point (the Portage center is -87.183296203613 / 41.584201812744). For your convenience we have also indicated if that zip code in Portage observes Daylight Savings time.