New York metropolitan area contains the administrative territorial entity Westchester County
The U.S. Office of Management and Budget utilizes two definitions of the urbanized area: the metropolitan statistical area (MSA) and the combined statistical area (CSA). The MSA definition is titled the New York-Newark-Jersey City, NY-NJ-PA Metropolitan Statistical Area, and includes a population of 20.3 million people by 2017 Census estimates, roughly 1 in 16 Americans and nearly 7 million more than the second-place Los Angeles metropolitan area in the United States. The MSA is further subdivided into four metropolitan divisions. The 23-county MSA includes 10 counties in New York State (coextensive with the five boroughs of New York, the two remaining counties of Long Island, and three counties in the Lower Hudson Valley); 12 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 (which had a land area of 3,450 square miles in 2010 according to the 2010 census). The New York state portion of the metropolitan area (the Five Boroughs, the lower Hudson Valley, and Long Island) accounts for over 65 percent of the state's population.
New York–Newark–Jersey City, NY–NJ–PA Metropolitan Statistical Area (19,043,386)New York–Jersey City–White Plains, NY–NJ Metropolitan Division (11,732,233)
Kings County, NY (the borough of Brooklyn in NYC)
Queens County, NY (the borough of Queens in NYC)
New York County, NY (the borough of Manhattan in NYC)
Bronx County, NY (the borough of The Bronx in NYC)
Richmond County, NY (the borough of Staten Island in NYC)
Westchester County, NY
Bergen County, NJ
Hudson County, NJ
Passaic County, NJ
Putnam County, NY
Orange County. NY
Rockland County, NY
Nassau County–Suffolk County, NY Metropolitan Division (2,832,882)
Suffolk County, NY
Nassau County, NY
New Brunswick-Lakewood, NJ Metropolitan Division (2,383,854)
Middlesex County, NJ
Monmouth County, NJ
Ocean County, NJ
Somerset County, NJ
Newark, NJ–PA Metropolitan Division (2,174,944)
Essex County, NJ
Union County, NJ
Morris County, NJ
Sussex County, NJ
Hunterdon County, NJ
Pike County, PAStatistical history
The U.S. Census Bureau first designated metropolitan areas in 1950 as standard metropolitan areas (SMAs). The "New York–Northeastern NJ SMA" was defined to include 17 counties: 9 in New York (the five boroughs of New York City, Nassau, Suffolk, Westchester, and Rockland) and 8 in New Jersey (Bergen, Hudson, Passaic, Essex, Union, Morris, Somerset, and Middlesex). In 1960, the metropolitan area standards were modified and renamed standard metropolitan statistical areas (SMSAs). The new standards resulted in the splitting of the former SMA into several pieces: the nine New York counties became the "New York SMSA"; three of the New Jersey counties (Essex, Union, and Morris) became the "Newark SMSA"; two other New Jersey counties (Bergen and Passaic) became the "Paterson–Passaic–Clifton SMSA"; Hudson County was designated the "Jersey City SMSA"; and Middlesex and Somerset counties lost their metropolitan status. In 1973, a new set of metropolitan area standards resulted in further changes: Nassau and Suffolk counties were split off as their own SMSA ("Nassau–Suffolk SMSA"); Bergen County (originally part of the Paterson–Clifton–Passaic SMSA) was transferred to the New York SMSA; the New York SMSA also received Putnam County (previously non-metropolitan); Somerset County was added to the Newark SMSA; and two new SMSAs, the "New Brunswick–Perth Amboy–Sayreville SMSA" (Middlesex County) and "Long Branch–Asbury Park SMSA" (Monmouth County), were established. In 1983, the concept of a consolidated metropolitan statistical area (CMSA) was first implemented. A CMSA consisted of several primary metropolitan statistical areas (PMSAs), which were individual employment centers within a wider labor market area. The "New York–Northern New Jersey–Long Island CMSA" consisted of 12 PMSAs.
Seven PMSAs were based on the original 1950 New York SMA that were split up: New York, Bergen–Passaic, Jersey City, Middlesex–Somerset–Hunterdon (Hunterdon added for the first time), Monmouth–Ocean (Ocean added for the first time), Nassau–Suffolk, and Newark (Sussex added for the first time). One additional PMSA was the Orange County PMSA (previously the Newburgh–Middletown SMSA). The other four PMSAs were former SMSAs in Connecticut: Bridgeport, Stamford, Norwalk, and Danbury. In 1993, four PMSAs were added to the New York–Northern New Jersey–Long Island CMSA: Trenton PMSA (Mercer County), Dutchess County PMSA, Waterbury PMSA, and New Haven PMSA. Several new counties were also added to the CMSA: Sussex, Warren, and Pike. The CMSA model was originally utilized for tabulating data from the 2000 census. In 2003, a new set of standards was established using the Core Based Statistical Area (CBSA) model was adopted and remains in use as of 2010. The CBSA model resulted in the splitting up of the old CMSA into several metropolitan statistical areas: New York–Northern New Jersey–Long Island, Poughkeepsie–Newburgh–Middletown, Trenton–Princeton, Bridgeport–Stamford–Norwalk (includes Danbury), and New Haven–Milford (includes Waterbury). In 2013, the Census Bureau added Carbon, Lehigh, Northampton, and Monroe counties in Pennsylvania, and Warren County, New Jersey (encompassing collectively the Allentown-Bethlehem-Easton, PA-NJ MSA and the East Stroudsburg, PA MSA), to the Combined Statistical Area, and assimilated Poughkeepsie–Newburgh–Middletown into the larger New York–Northern New Jersey–Long Island–NY–NJ–PA MSA. In 2018, the Allentown-Bethlehem-Easton, PA-NJ MSA was removed from the Combined Statistical Area.
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