The combined value of farms and rural land for sale in New London County recently on Land.com was nearly $252 million. This represents nearly 4,000 acres of farms and rural real estate for sale in New London County. New London County ranks fourth in Connecticut based on the total acres of land for sale of the eight counties in Connecticut. Norwich featured the most land for sale. New London County is one of the ten biggest counties in Connecticut (771 square miles). It's located in the Mystic Country Connecticut region of Connecticut.