The value of all land for sale in Washington's Chelan County recently was around $79 million, representing a total of 2,013 acres of land for sale in Chelan County. Chelan County ranks 15th out of 39 counties in the Evergreen State for the combined amount of land currently advertised for sale. Chelan had the most land for sale. Based on its natural assets, tourism and recreation contribute significant revenue toward Chelan County's overall GDP. Chelan County is one of the ten biggest counties in Washington (2,994 square miles). It's located in the Cascade Range Washington region of the state.