Farmington is an unincorporated community in Atchison County, Kansas, United States. History Farmington had its start by the building of the Missouri Pacific Railroad through that territory. The post office was opened in 1868, and remained in operation until it was discontinued in 1940. Notable people Pardee Butler - Free-State advocate, abolitionist, preacher Milo Hastings - Inventor References Further reading External links Atchison County maps: Current, Historic, KDOT Unincorporated communities in Atchison County, Kansas Unincorporated communities in Kansas 1868 establishments in Kansas Populated places established in 1868