A total of approximately 6,000 acres were listed for sale in New York's Columbia County recently, representing a combined $227 million in Columbia County land and rural real estate for sale. Columbia County ranks 21st in the Empire State for the total acreage of land currently advertised for sale. Of all farms and rural real estate for sale in Columbia County, Hudson featured the most land for sale. Based on its natural assets, tourism and recreation are important contributors to the Columbia County economy. Columbia County is the 38th biggest county (648 square miles) in New York. It's located in the Southern New York region of New York.