A total of nearly 100,000 acres were listed for sale in Idaho's Blaine County recently, representing a total value of $878 million in Blaine County land for sale. Blaine County ranks 11th out of 44 counties in Idaho for the combined amount of land currently advertised for sale. Hailey had the most land for sale. Based on its natural assets, tourism and recreation are important contributors to the Blaine County economy. Blaine County is one of the ten largest counties in Idaho (2,654 square miles). It's located in the Central Idaho region of the state.