Round O, South Carolina
Round O (formerly also called Round) is an unincorporated community in Colleton County, South Carolina, United States. Its elevation is 36 feet (11 m), its ZIP code is 29474, and it is located near the intersection of Cottageville Highway (US 17) and Round O Road (S-15-45). Its geographic coordinates are [ (32.9371, −80.5409).]. There are numerous churches within the community, including Canaan Baptist Church and Mount Sinai Baptist. It also has a small US Post Office.
Round O was the site of the Sheridan Plantation, purchased around 1830 by Dr. Hugo Grotius Sheridan (1768–1853). The house on it was destroyed by fire in 1849. Some of the land on it is still in possession of Sheridan descendants.