Land for sale in Kansas's Atchison County recently totaled $4 million and almost 1,000 acres. Atchison County ranks 57th in the Jayhawk State for the total acreage of land currently advertised for sale. Atchison featured the most land for sale. Manufacturing and related services are the largest economic sectors in Atchison County. Atchison County is the 102nd largest county (433 square miles) in Kansas. It's located in the Wooded Hills Kansas region of Kansas.