Located in Iowa, 570-square-mile Adair County accounts for less than one percent of the state's total land area. Of Iowa's 99 counties, Adair County ranks 90th in terms of the size of its population (7,228, according to 2015 Census estimates). Recent Lands of America data shows that the average price-per-acre value of land and acreage for sale in Adair County is $775. The average listing price was $166,000 (the most expensive listing being for $268,000) and the median land-parcel size was 45 acres. Land for sale in Adair County totaled 643 acres and $498,000 in overall land value, with the city of Fontanelle featuring the most land for sale in the county. Farmland was the most common type of land for sale in Adair County.