Land for sale in Atchison County recently totaled nearly $6 million and around 1,000 acres. Atchison County ranks 49th out of 105 counties in the state for the total number of acres of land currently advertised for sale. Atchison had the most land for sale. Manufacturing and related services are the largest economic sectors in Atchison County. Atchison County is Kansas's 102nd biggest county (433 square miles). It's located in the Wooded Hills Kansas region of Kansas.