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Wilton is a town in Fairfield County, Connecticut, United States. As of the 2020 census, the town population was 18,503. The town is part of the Western Connecticut Planning Region.
Officially recognized as a parish in 1726, Wilton today is a residential community with open lands, historic architecture such as the Round House, and many colonial homes. Many residents commute to nearby cities such as Stamford or New York City.
Wilton is home to many global corporations such as ASML, Breitling SA, Cannondale Bicycle Corporation, Melissa & Doug, and formerly Deloitte. It is also home to AIG Financial Products, whose collapse played a pivotal role in the financial crisis of 2007–2008.The transformation from a small farming town to a suburban residential community has been carefully controlled by zoning, efforts to preserve the town's colonial landmarks, and the reservation of almost 1,000 acres (4 km2) of open space for active and passive recreational use. The Cannondale Historic District, in north-central Wilton, retains its historic character and was listed on the National Register of Historic Places in 1992.