A total of approximately 1,000 acres were listed for sale in Summit County recently, representing a total value of nearly $574 million in Summit County land for sale. Summit County ranks 25th out of 64 counties in the state for the total acreage of land currently advertised for sale. Of all locations in Summit County with land and rural real estate for sale, Breckenridge had the most land for sale. Based on its natural assets, tourism and recreation are important sectors for the Summit County economy. Summit County is the 55th biggest county (619 square miles) in Colorado. It's located in the Northwest Colorado region of Colorado.