Below is a list of Hamlin County SD zip codes. For your research we have also included Hamlin County Area Code, Time Zone, UTC and the local County FIPS Code. Each Hamlin County South Dakota zip code has a center Longitude / Latitude point (the Hamlin County center is -97.208999633789 / 44.66609954834). For your convenience we have also indicated if that zip code in Hamlin County observes Daylight Savings time.