Troy is a city in and the county seat of Doniphan County, Kansas, United States. As of the 2010 census, the city population was 1,010. Troy is part of the St. Joseph, MO–KS Metropolitan Statistical Area.
Troy grew up from humble beginnings along the wagon route from St. Joseph, Missouri to Oregon and California. British explorer Richard Francis Burton en route to California in 1860 noted: "Passing though a few wretched shanties called Troy ..."
Troy is located at 39°47′17″N 95°05′27″W / 39.788099°N 95.090840°W / 39.788099; -95.090840 (39.788099, -95.090840). According to the United States Census Bureau, the city has a total area of 0.7 square miles (1.9 km2), all of it land.