St. Thomas Island Charleston SC Homes & Real Estate For Sale MLS Listings Data: St. Thomas IslandTotal Listings:2Average Price:$692,500Highest Listing Price:$950,000Average Days On Market:140Houses For Sale St. Thomas Island subdivision Charleston SC. MLS real estate listings for sale in St. Thomas Island Charleston SC by price, street, age, list date, bedrooms & more St. Thomas Island Charleston SC. Currently, St. Thomas Island in Charleston SC has a total of two listings on the local MLS for sale with an average price point of $692,500, the max being $950,000 and the lowest priced house $435,000. The neighborhood of St. Thomas Island subdivision in Charleston SC has an average house size of 0 sq ft and the average days on the market in this community is 140. RelativeSort by Year Built: low to highSort by Year Built: high to lowSort by price: low to highSort by price: high to lowSort from oldest to newestSort from newest to oldestSort by status: active to under contractSort by status: under contract to active Filters Saving Subscribe Unsubscribe Loading...