The value of all land and rural real estate for sale in Delaware County recently was $150 million, representing a total of 9,827 acres of land for sale in Delaware County. Delaware County ranks 13th out of 62 counties in the Empire State for the total acreage of land currently advertised for sale. Among cities in Delaware County with land and rural real estate for sale, Hancock featured the most land for sale. Manufacturing and related services are the largest economic sectors in Delaware County. Delaware County is one of the ten largest counties in New York (1,467 square miles). It's located in the Southern New York region of New York.