Below is a list of Portland TN zip codes. For your research we have also included Portland Area Code, Time Zone, UTC and the local Sumner County FIPS Code. Each Portland Tennessee zip code has a center Longitude / Latitude point (the Portland center is -86.49 / 36.5666). For your convenience we have also indicated if that zip code in Portland observes Daylight Savings time. For more information on Portland Tennessee you will find helpful business links and searches.