A commenter on the article (Comparing Urban Densities: Winnipeg and New York) expressed an interest in seeing the extent of the New York urban area. The main page of the Census Bureau map is posted here (PDF, 9MB). The map is difficult to read, but easier if the zoom function is employed. The New York urban area is defined by a black line, and extends:
- South to the southern tip of Long Beach Island, in Ocean County, New Jersey, about 10 miles from the city limits of Atlantic City --- about 85 miles south of Manhattan (“as the crow flies”).
- West to within 7 miles of the Pennsylvania border, in Warren County, New Jersey --- about 50 miles west of Manhattan.
- North to southern Dutchess County, New York --- about 60 miles of Manhattan)
- East to 25 miles west of Montauk, New York (east end of Long Island) --- about 85 miles east of Manhattan.
The entire map is available here and contains 22 maps with more detailed information.
In 2010, the New York urban area covered 3,450 square miles (8,936 square kilometers), with a population of 18.351 million and a population density of 5,319 per square mile (2,054 per square kilometer). Among the large urban areas in the United States, New York was the fourth densest, trailing Los Angeles (6,999 per square mile), San Francisco (6,267 per square mile) and San Jose (5,820 per square mile).
Urban areas are defined by Census Bureau criteria principally using population density of continuously developed urbanization. The 2010 census urban area criteria are here. The 2020 data has not yet been released.
Metropolitan areas are organized around urban areas, and their corresponding “central counties.” The central counties associated with a particular urbanized area or urban cluster are grouped to form a single cluster of central counties for purposes of measuring commuting to and from potentially qualifying outlying counties. Central counties are defined as “those counties that:
- Have at least 50 percent of their population in urban areas of at least 10,000 population; or
- Have within their boundaries a population of at least 5,000 located in a single urban area of at least 10,000 population.”
Metropolitan areas comprise the central counties and “outlying counties that meet commuting interchange criteria. Urban areas can have small extensions into counties not within the corresponding metropolitan area, such as Warren County, New Jersey and Dutchess County, New York as in the case of the New York urban area (above).
Due to the huge size of the New York urban area, all but one of the 23 metropolitan counties is “central.” Only Pike County, Pennsylvania is an “outlying” county.
There is a misimpression that metropolitan areas are organized around commuting into central business districts, or central cities (municipalities). In fact, the current commuting criteria relates only to central counties --- the 22 in New York metropolitan area, not Manhattan or the city of New York.
Wendell Cox is principal of Demographia, an international public policy firm located in the St. Louis metropolitan area. He is a founding senior fellow at the Urban Reform Institute, Houston, a Senior Fellow with the Frontier Centre for Public Policy in Winnipeg and a member of the Advisory Board of the Center for Demographics and Policy at Chapman University in Orange, California. He has served as a visiting professor at the Conservatoire National des Arts et Metiers in Paris. His principal interests are economics, poverty alleviation, demographics, urban policy and transport. He is co-author of the annual Demographia International Housing Affordability Survey and author of Demographia World Urban Areas.
Mayor Tom Bradley appointed him to three terms on the Los Angeles County Transportation Commission (1977-1985) and Speaker of the House Newt Gingrich appointed him to the Amtrak Reform Council, to complete the unexpired term of New Jersey Governor Christine Todd Whitman (1999-2002). He is author of War on the Dream: How Anti-Sprawl Policy Threatens the Quality of Life and Toward More Prosperous Cities: A Framing Essay on Urban Areas, Transport, Planning and the Dimensions of Sustainability.