A combined 100,000 acres were listed for sale in Colorado's Grand County recently; the value of all Grand County farms and ranches for sale was $364 million. Grand County ranks 18th in the state based on the combined acreage of land for sale among the 64 counties in the Mile High State. Of all locations in Grand County with land for sale, Granby had the most land for sale. Based on its natural assets, tourism and recreation are important contributors to the Grand County economy. Grand County is Colorado's 21st biggest county (1,869 square miles). It's located in the Northwest Colorado region of the state.