Land for sale in Columbia County recently totaled approximately $223 million and almost 6,000 acres. Columbia County ranks 23rd out of 62 counties in New York for the combined amount of land currently advertised for sale. Of all locations in Columbia County with farms, hunting land and other rural land and acreage for sale, Hudson featured the most land for sale. Based on its natural assets, Columbia County's economy is dependent on tourism and recreation. Columbia County is New York's 38th biggest county (648 square miles). It's located in the Southern New York region of the state.