Atchison County is a county in Kansas. It covers 435 square miles (278,438 acres), which represents less than one percent of the state total. Of the 105 counties in Kansas, Atchison County ranks 31st in terms of the size of its population (16,398, according to 2015 Census estimates). Manufacturing and related services provide the main economic inputs to Atchison County. Recent Lands of America data shows that the average price-per-acre value of land for sale in Atchison County is $3,535. The average list price of property and land for sale was $347,467 (the most expensive listing being for $801,237) and the median land-parcel size was 39 acres. Land for sale in Atchison County totaled 492 acres and $1.7 million in overall land value, with the city of Atchison featuring the most land for sale in the county. Farmland was the most common type of land for sale in Atchison County.