Real Estate Listings For Sale 29920 zip code SC MLS Listings Data: 29920 Total Listings: 12 Average Price: $706,958 Highest Listing Price: $2,950,000 Average Days On Market: 167 Homes For Sale 29920 zip code Saint Helena Island SC. MLS real estate listings for sale in SC by price, street, age, subdivision, neighborhood, list date, bedrooms & more SC zip code 29920. Currently, Saint Helena Island SC 29920 has a total of twelve listings on the local MLS for sale with an average price point of $$706,958, the max being $$2,950,000 and the lowest priced house $$45,000 to purchase in the 29920 zip code. Homes in the Saint Helena Island SC 29920 have an average house size of 1,328 sq ft and the average days on the market in zip code 29920 is 167 days. Please contact our team to list or sell your home, view or make an offer on one of the properties you see here updated every 5 mins in real-time. 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...