Atchison is located in Atchison County. About 10,885 people live here (as of 2020). Between 2010 and 2020, the population declined from 11,021 to 10,885. The region is at 248 meters above sea level. The area covers about 21.6 square kilometers. There are about 631 streets in Atchison. The region was founded in 1854. The postal codes are 66002. The dialing code is 913. Atchison is city in and county seat of Atchison County, Kansas, United States. Among other things, Atchison has restaurants, cafés, supermarkets, clothing Stores, museums, schools, banks and dentists. More information at
www.cityofatchison.com.