The value of all farms, rural land, hunting land and other land for sale in Delaware's Kent County recently was around $104 million, representing a combined 493 acres of land for sale in Kent County. Kent County ranks second based on the combined acreage of land for sale of all the counties in the First State. Dover had the most land for sale. Kent County is one of the ten largest counties in Delaware (798 square miles). It's located in the Central Delaware region of the state.