New Fairfield is a town in Fairfield County, Connecticut, United States. The population was 13,881 at the 2010 census. The town is considered part of the greater New York Metropolitan Area and lies approximately 50 miles (80 km) from New York City. New Fairfield is one of five towns that surround Candlewood Lake, the largest lake in Connecticut. New Fairfield neighbors Sherman, Danbury, and Brewster, NY.