St. Thomas Island Charleston SC Homes & Real Estate For Sale MLS Listings Data: St. Thomas Island Total Listings: 2 Average Price: $692,500 Highest Listing Price: $950,000 Average Days On Market: 66 Houses 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 66. Relative Sort by Year Built: low to high Sort by Year Built: high to low Sort by price: low to high Sort by price: high to low Sort from oldest to newest Sort from newest to oldest Sort by status: active to under contract Sort by status: under contract to active Saving Subscribe Unsubscribe Loading...