There was a combined $104 million of land and rural real estate for sale in Delaware's Kent County recently on Land.com. The total acreage of all Kent County land and rural real estate for sale was nearly 1,000 acres. Kent County ranks second in Delaware based on the total acres of land for sale of all the counties in the "Small Wonder. Of all land for sale in Kent County, Dover had the most land for sale. Kent County is one of the ten biggest counties in Delaware (798 square miles). It's located in the Central Delaware region of Delaware.