Real Estate Listings For Sale 29420 zip code SC MLS Listings Data: 29420 Total Listings: 5 Average Price: $368,423 Highest Listing Price: $645,617 Average Days On Market: 55 Homes For Sale 29420 zip code Charleston SC. MLS real estate listings for sale in SC by price, street, age, subdivision, neighborhood, list date, bedrooms & more SC zip code 29420. Currently, Charleston SC 29420 has a total of five listings on the local MLS for sale with an average price point of $$368,423, the max being $$645,617 and the lowest priced house $$225,000 to purchase in the 29420 zip code. Homes in the Charleston SC 29420 have an average house size of 1,803 sq ft and the average days on the market in zip code 29420 is 55 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...