A combined 1,000 acres were listed for sale in Summit County recently; the value of all Summit County ranches, farms, hunting land and other rural land and acreage for sale was nearly $585 million. Summit County ranks 24th out of 64 counties in the state for the total number of acres of land currently advertised for sale. Breckenridge featured the most land for sale. Based on its natural assets, Summit County's economy is dependent on tourism and recreation. Summit County is the 55th biggest county (619 square miles) in Colorado. It's located in the Northwest Colorado region of the state.