Located in Illinois, 284-square-mile Calhoun County accounts for less than one percent of the state's total land area. Of Illinois's 102 counties, Calhoun County ranks 100th in terms of the size of its population (4,899, according to 2015 Census estimates). Its economy is defined as agricultural, with 478 farms recorded in the county during the 2012 U.S. Census. Recent Lands of America data shows that the average price-per-acre value of land and acreage for sale in Calhoun County is $2,745. On average, the price of land for sale was $518,253 (the most expensive listing being for $1.7 million) and the median land-parcel size was 155 acres. Land for sale in Calhoun County totaled 755 acres and $2.1 million in overall land value, with the city of Hardin featuring the most land for sale in the county. Given its rural location and ecomony, farms and other agricultural acreage are the most common types of land for sale in Calhoun County.