A total of nearly 100,000 acres were listed for sale in Adams County recently, representing a combined $145 million in Adams County ranches, farms, hunting land and other rural land and acreage for sale. Adams County ranks 13th based on the combined acreage of land for sale among the 44 counties in Idaho. Council featured the most land for sale. From an economic perspective, government and state-level services contribute most to Adams County's overall GDP. Adams County is Idaho's 22nd largest county (1,369 square miles). It's located in the Southwestern Idaho region of the state.