Below is a list of Oldham SD zip codes. For your research we have also included Oldham Area Code, Time Zone, UTC and the local Kingsbury County FIPS Code. Each Oldham South Dakota zip code has a center Longitude / Latitude point (the Oldham center is -97.310997009277 / 44.224601745605). For your convenience we have also indicated if that zip code in Oldham observes Daylight Savings time.