A total of 100,000 acres were listed for sale in Hudson County recently; the combined value of all Hudson County farms, hunting land and other rural land and acreage for sale was around $4 million. Based on the combined acreage of land and rural property for sale here, Hudson County has the most land for sale of the 21 counties in New Jersey. Of all farms and rural real estate for sale in Hudson County, Jersey City had the most land for sale. Hudson County is New Jersey's 21st largest county (62 square miles). It's located in the North New Jersey region of the state.