Below is a list of New Underwood SD zip codes. For your research we have also included New Underwood Area Code, Time Zone, UTC and the local Pennington County FIPS Code. Each New Underwood South Dakota zip code has a center Longitude / Latitude point (the New Underwood center is -102.83599853516 / 44.096298217773). For your convenience we have also indicated if that zip code in New Underwood observes Daylight Savings time.