Situated 3 nautical miles east of the downtown of Madison, in New Haven County, Connecticut, Griswold Airport was a public-use airport closed in 2007. The airport was privately owned and operated by Griswold Airport, Inc. Covering a total area of about 42 acres, Griswold Airport has one runway with an asphalt surface. The airport was mainly used for general aviation. The airport is located near the Hammonasset State Park.