The United States Office of Management and Budget has designated Fairfield County as the Bridgeport-Stamford-Norwalk-Danbury metropolitan statistical area. The United States Census Bureau ranked the metropolitan area as the 59th most populous metropolitan statistical area of the United States in 2019. The U.S. Office of Management and Budget has further designated the metropolitan statistical area as a component of the more extensive New York-Newark-Bridgeport, NY-NJ-CT-PA combined statistical area, the most populous combined statistical area and primary statistical area of the United States.