Singleton, town, east-central New South Wales, Australia. It lies on the Hunter River.
Founded in 1820, it was first known as St. Patrick’s Plain and then was renamed in 1822 for an early settler, Benjamin Singleton. It was proclaimed a town in 1836, became a municipality in 1866, and was designated a shire in 1976.
The town is located on a highway and major rail lines. Dairying is a major economic activity and supplies Sydney (95 miles [150 km] southwest) with dairy produce. Cattle, wine grapes, olives, and vegetables are also raised in the district. Coal mining dominates the economy, and the town has a variety of light industries. The area in which Singleton is situated is liable to floods; two of the worst flooding events in the town’s history occurred in 1955 and 2007. Nearby Lake St. Clair and Mount Royal National Park provide opportunities for outdoor recreation. Singleton hosts a biennial arts festival (July). Pop. (2006) local government area, 21,937; (2011) local government area, 22,694.