Long Island is one of the most densely populated regions in the United States. As of the United States 2000 Census, the total population of all four counties of Long Island was 7,448,618. New York City's portion of the census was 4,694,705, with Brooklyn's population at 2,465,326 and Queens having 2,229,379 residents.
The combined population of Nassau and Suffolk counties was 2,753,913 people; Suffolk County's share at 1,419,369 and Nassau County's at 1,334,544. Nassau County had a larger population for decades, but Suffolk County surpassed it in the 1990 census as growth and development continued to spread eastward. As Suffolk County has over twice the land area of Nassau County, the latter still has a much higher population density. Combined, Long Island's population is greater than 38 of the 50 United States. If it were an independent nation, it would rank as the 96th most populated nation, falling between Switzerland and Israel.