Land for sale in Hamilton County recently totaled approximately $282 million and almost 100,000 acres. Based on the combined acreage of land and rural property for sale here, Hamilton County has the most land for sale of all counties in the Empire State. Of all farms, hunting land and other rural land and acreage for sale in Hamilton County, Long Lake featured the most land for sale. Based on its natural assets, tourism and recreation contribute significant revenue toward Hamilton County's overall GDP. Hamilton County is one of the ten biggest counties in New York (1,807 square miles). It's located in the Northern New York region of New York.