The Doniphan County Courthouse Square Historic District in Troy, Kansas is a historic district which was listed on the National Register of Historic Places in 2002. It is roughly bounded by E. Walnut, E Chestnut, S. Main, and S. Liberty Streets. The district included 17 contributing buildings and one contributing site. It includes Italianate and Queen Anne architecture. Its contributing buildings include: Doniphan County Courthouse (1906), which was previously separately listed on the National Register. Cyrus Leland Store Building (1911), 102 E. Walnut McClellan Mercantile Building (1900), 120 E. Walnut Mabel Perry Campbell House (c.1912), 115 E. Chestnut Sol Miller Building (c.1870), 101 S. Main Boder Brothers Bank/First National Bank (1872), 137 S. Main References Government buildings on the National Register of Historic Places in Kansas Italianate architecture in Kansas Queen Anne architecture in Kansas Doniphan County, Kansas Historic districts on the National Register of Historic Places in Kansas