A combined nearly 2,000 acres were listed for sale in Adams County, Illinois, recently; the overall value of all Adams County farms, rural land, hunting land and other land for sale was around $31 million. Adams County ranks 33rd out of 102 counties in the state for the total acreage of land currently advertised for sale. There were two properties listed as sold in Adams County through the Land Network Comparable Sales Program. This represented a total value of $1,121,318. Quincy had the most land for sale. Adams County is Illinois's 12th largest county (871 square miles). It's located in the Western Illinois region of Illinois.