Below is a list of Timber Lake SD zip codes. For your research we have also included Timber Lake Area Code, Time Zone, UTC and the local Dewey County FIPS Code. Each Timber Lake South Dakota zip code has a center Longitude / Latitude point (the Timber Lake center is -101.077003479 / 45.432800292969). For your convenience we have also indicated if that zip code in Timber Lake observes Daylight Savings time.