Below is a list of Round O SC zip codes. For your research we have also included Round O Area Code, Time Zone, UTC and the local Colleton County FIPS Code. Each Round O South Carolina zip code has a center Longitude / Latitude point (the Round O center is -80.540802001953 / 32.938098907471). For your convenience we have also indicated if that zip code in Round O observes Daylight Savings time.