Below is a list of Stephan SD zip codes. For your research we have also included Stephan Area Code, Time Zone, UTC and the local Hyde County FIPS Code. Each Stephan South Dakota zip code has a center Longitude / Latitude point (the Stephan center is -99.441802978516 / 44.251899719238). For your convenience we have also indicated if that zip code in Stephan observes Daylight Savings time.