Portal:New York (state)/Selected article/19
New York–Northern New Jersey–Long Island, often referred to as the Tri-State Region, is the most populous metropolitan area in the United States and is also one of the most populous in the world. The metropolitan area is defined by the United States Census Bureau as the New York–Northern New Jersey–Long Island, NY–NJ–PA Metropolitan Statistical Area (MSA), with an estimated population (as of 2005) of 18,747,320. The MSA is further subdivided into four metropolitan divisions. The 23-county metropolitan area includes ten counties in New York State, including the five boroughs of New York City, the two other counties of Long Island, and three in the lower Hudson Valley, twelve counties in Northern and Central New Jersey, and one county in northeastern Pennsylvania. The largest urbanized area in the United States is at the heart of the metropolitan area, the New York–Newark, NY–NJ–CT Urbanized Area (with a population of 17,799,861 as of the 2000 census).