Coming in at a close second is East Alton-Wood River DIST 14, also in Illinois, with an average of 21 days on the market for its 2 active listings. And in third place is Columbia DIST 4, also in Illinois, with 9 active listings and an average of 21 days on the market. Families looking to move to the St. Louis metropolitan area will want to take note of these fast-selling school districts. For the complete list of the fastest selling school districts in the area, visit MORE, REALTORS®. Don’t miss out on the opportunity to buy or sell in these highly sought-after areas.