Queensbury is a town in Warren County, New York, United States. The population was 27,901 at the 2010 census. It contains the county seat of Warren County, located at a municipal center complex on U.S. Route 9 south of the village of Lake George. It was moved to the complex in 1963 from the original county seat of Lake George. The town is located in the southeastern corner of the county and is part of the Glens Falls Metropolitan Statistical Area. It is named in honor of Queen Charlotte, the consort of George III of Great Britain and Ireland. Although primarily located north of the city of Glens Falls, Queensbury surrounds the city on three sides.
Major efforts at settlement began with the Queensbury Patent in 1762, which enticed Quaker settlers to move into the area known as the "Township of Queensbury" the next year. The Quakers left during the Revolutionary War and returned in 1783 when hostilities ended in the area.
In 1786, the town was re-established as the town of Queensbury. In 1788, the town included all of what is today Warren County. It lost territory in 1792 when the town of Fairfield (Lake Luzerne) was formed and again in 1810 to form part of the town of Caldwell (Lake George). In 1908, the then largest village within Queensbury, Glens Falls, incorporated as a city and became a separate municipality. The population of Queensbury has exceeded that of Glens Falls since the 1980 Census.
In 2003, with permission from Queensbury, Glens Falls annexed approximately of the town. The land, known as Veterans Field or the Northway Industrial Park, is on Veterans Road between Luzerne Road and Sherman Avenue and is just east of I-87. The land was vacant at the time. A thin, strip of Sherman Avenue was part of this annexation, in order to comply with state law regarding contiguity of annexed land. Both the city and town now share ownership of this stretch of highway as a result.