Thompson is a rural town in Windham County, Connecticut, United States. The town was named after Sir Robert Thompson, an English landholder. The population was 9,458 at the 2010 census. Thompson is located in the northeastern corner of the state and is bordered on the north by Webster, Massachusetts and Dudley, Massachusetts, on the east by Douglas, Massachusetts and Burrillville, Rhode Island, on the west by Woodstock, Connecticut, and on the south by Putnam, Connecticut.
Thompson has the highest-banked race track (Thompson Speedway Motorsports Park, a 5/8 mile oval and a restored 1.7 mile road course) in New England. This speedway holds one of the biggest race programs in New England, The World Series of Auto Racing, where 16 divisions and about 400 cars show up each fall. Another claim to fame is that the Tri-State Marker is located just on the border of Thompson. The term "Swamp Yankee" is thought to have originated in Thompson during the American Revolution in 1776.
Thompson was the site of the Great East Thompson Train Wreck in 1891, one of the worst train wrecks in American history and the only one to involve four trains.
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