Atchison County, Missouri

Atchison County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF

Government Unit	Unit Type	Jurisdiction Role	Contact / Address
COUNTY OF ATCHISON GUS Population: 5,139 (2024) ID: 107549	County	Official County Government	Contact: CLERK PO BOX 280, ROCK PORT MO 64482-0280
CITY OF TARKIO GUS Population: 1,470 (2024) ID: 168785	Municipal	Municipal Government Within County	Contact: CITY CLERK 602 MAIN ST, TARKIO MO 64491-1524
CITY OF ROCK PORT GUS Population: 1,238 (2024) ID: 204814	Municipal	Municipal Government Within County	Contact: CITY CLERK 500 S MAIN ST, ROCK PORT MO 64482-1538
CITY OF FAIRFAX GUS Population: 623 (2024) ID: 168783	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 315, FAIRFAX MO 64446-0315
CITY OF WESTBORO GUS Population: 112 (2024) ID: 107579	Municipal	Municipal Government Within County	Contact: CLERK PO BOX 156, WESTBORO MO 64498-0156
TOWN OF WATSON GUS Population: 56 (2024) ID: 168786	Municipal	Municipal Government Within County	Contact: CHAIRPERSON 205 LINDEN ST, WATSON MO 64496-8402