Jackson Township, Jackson County, Indiana

Seymour is a city in Jackson County, Indiana, United States. Its population was 21,569 at the 2020 census. The city is noted for its location at the intersection of two major north–south and east–west railroads, which cross each other in the downtown area. The north–south line (the Jeffersonville, Madison and Indianapolis Railroad) was built in the 1840s and connected Indianapolis to the Ohio River at Jeffersonville. In 1852, Captain Meedy Shields persuaded Hezekiah Cook Seymour into building the eastwest railroad (the Ohio and Mississippi Railroad) through his land, and in return named the city in Seymour's honor. The firsts settlers arrived in the spring of 1853. The companies Aisin USA and Rose Acre Farms are headquartered in Seymour, and Cummins operates a plant in the area. The city is also home to the 2nd largest high school gymnasium in the United States by seating capacity.

Seymour Commercial Historic District is a national historic district located at Seymour, Jackson County, Indiana. It encompasses 79 contributing buildings and 4 contributing structures in the central business district of Seymour. The district developed between about 1876 and 1945, and includes notable examples of Italianate, Romanesque Revival, and Classical Revival style architecture. Located in the district is the separately listed Farmers Club. Other notable buildings include the Masonic Temple (1901), Richart Block (1900), Steinker Meat Market (c. 1885), Seymour National Bank (c. 1920), Southern Indiana Telephone and Telegraph Building (1929), Jonas Hotel (c 1876), and Kidd Saloon (1887).It was listed on the National Register of Historic Places in 1995.

The Southern Indiana Railroad Freighthouse, located in Seymour, Indiana, has since January 2008 served as the Jackson County Visitor Center, for Jackson County, Indiana. This freight house was placed on the National Register of Historic Places on June 22, 2003. Three separate railroads once used the facilities here. These railroads included the Jeffersonville Railroad and the Ohio and Mississippi Line. These facilities included a roundhouse repair shop, the Adams Express Company, and access to interurbans. A passenger depot located next to the freighthouse has been demolished. The Freighthouse has display detailing the history of railroads in Jackson County.The Freighthouse is a block east of the Seymour Commercial Historic District.

Farmers Club is a historic clubhouse located at Seymour, Jackson County, Indiana. It was built in 1914, and is a 1+1⁄2-story, Beaux-Arts style brick building with Indiana limestone embellishments. The main entrance features flanking Ionic order columns, round arch transom, and projecting piers. The building houses the local chamber of commerce.: 2 It was listed on the National Register of Historic Places in 1983. It is located in the Seymour Commercial Historic District.

New Farmington is an unincorporated community in Jackson Township, Jackson County, Indiana.

First Presbyterian Church is a historic Presbyterian church located at 301 N. Walnut Street in Seymour, Jackson County, Indiana. It was completed in 1884, and is a one-story, Late Gothic Revival style brick church with a cross-axial plan. It features a tall corner bell tower and large art glass windows measuring 18 feet wide by 22 feet high.: 2 It was listed on the National Register of Historic Places in 1991.

George H. Vehslage House is a historic home located at Seymour, Jackson County, Indiana. It was built in 1894, and is a 2+1⁄2-story, Queen Anne style brick dwelling with a limestone foundation. It features a corner tower with a hexagonal roof, irregular floorplan, and one-story full width front porch with ornate woodwork. Also on the property is a two-story carriage house.: 3 It was listed on the National Register of Historic Places in 2010.

T. Harlan and Helen Montgomery House is a historic home located at Seymour, Jackson County, Indiana. It was built between 1922 and 1929, and is a two-story, Dutch Colonial Revival style frame dwelling with a gambrel roof. It consists of a main rectangular block with a small portico, side porch, rear ell, and porte cochere. Also on the property is a contributing garage constructed in 1926.: 5 It was listed on the National Register of Historic Places in 2010.

Rising Sun Historic District is a national historic district located at Rising Sun, Ohio County, Indiana. The district encompasses 322 contributing buildings, 2 contributing sites, and 2 contributing objects in Rising Sun. It developed between about 1810 and 1955, and includes notable examples of Federal, Italianate, and Classical Revival style architecture. Located in the district are the separately listed Clore Plow Works-J.W. Whitlock and Company buildings. Other notable contributing resources include the First Presbyterian Church (1843), Ohio County Courthouse (1845), Alexander C. Downey House (c. 1850), Rising Sun Cemetery (aka Union and Soldier's Cemeteries; c. 1810), and Robert E. Covington House (c. 1885).It was listed on the National Register of Historic Places in 2006.

Seymour High School is a public high school in Seymour, Indiana. It is the only high school in the Seymour Community Schools district.

Freeman Municipal Airport (IATA: SER, ICAO: KSER, FAA LID: SER) is a public use airport located two nautical miles (4 km) southwest of the central business district of Seymour, a city in Jackson County, Indiana, United States. It is owned by the Seymour Airport Authority. This airport is included in the National Plan of Integrated Airport Systems for 2021–2025, which categorized it as a general aviation facility.

The Freeman Army Airfield Museum is an aviation museum located at Freeman Municipal Airport in Seymour, Indiana focused on the history of Freeman Army Airfield and captured Axis aircraft.