Darien is a town in Fairfield County, Connecticut, United States. A relatively small community on Connecticut's "Gold Coast", it is one of the most affluent towns in the United States. The population was 20,732 at the 2010 census.
Situated between the small cities of Norwalk and Stamford, the town is a bedroom community with relatively few office buildings. Most workers commute to the adjacent cities, and many also work in New York City. Two Metro-North railroad stations – Noroton Heights and Darien – link the town to Grand Central Terminal and the rest of the New Haven Line. For recreation, the town includes four small parks, two beaches on Long Island Sound, four country clubs, a hunt club, and two yacht clubs.
With a median home price of approximately $1 million, Darien is one of the most expensive places to live in North America, and was rated one of the best places to live in America by CNN in 2005.