[2] Seymour is bordered by the towns of Oxford and Beacon Falls to the north, Bethany and Woodbridge to the east, Ansonia and Derby to the south, and Shelton to the west.

The downtown portion of what is now Seymour was eventually called Humphreysville, named after Revolutionary War hero David Humphreys, aide-de-camp to General George Washington.

[5] Humphreys had purchased a factory in what is the downtown portion of the town, which produced scythes and other tools as well as wool products from the sheep he had imported.

[6] The Town of Seymour, CT has its own police department, 2 fire companies, and an ambulance association.

2 is located on DeForest Street with its primary response area being the downtown and east side of the town.

Since the Citizens' Engine Company was located "downtown" it took quite some time for the firefighters and apparatus to reach the west side area.

Since the Great Hill area did not have the luxury of fire hydrants, the company utilized ponds and also tanker trucks that carried water.

originally operated its ambulances from various locations and was quartered in the Citizens' firehouse using the easternmost portion of the building for several years.

The organization is currently quartered at 4 Wakeley Street, the building formerly housing the Seymour Police Department.

Named localities within Seymour include Bungay, Cedar Ridge District, Clifton, Garden City, Great Hill, Promise Land, Skokorat, Squantuck, and Amity.

The Valley Independent Sentinel, an online-only, non-profit news site, launched in June 2009.

[13] Seymour High School's sports teams also participate in the fight against breast cancer.

The funds are used to assist those who are having trouble meeting financial commitments while undergoing treatment for breast cancer.

[15] The Seymour train station provides commuter rail service to Bridgeport, Stamford, and Grand Central Terminal in New York City via the Waterbury Branch on the Metro-North Railroad's New Haven Line.

Connecticut Transit New Haven Division provides bus service to Seymour on its F West Chapel Street route.