Chart of northeastern metropolitan areas of United States by population (2010 census)

Below are the ten most populous metropolitan statistical areas, and the ten largest cities of the Census Bureau-defined region. Several of these cities in a narrow strip along the seaboard comprise the backbone of the Northeast megalopolis, excluding Baltimore and Washington, D.C.

Reference 1: Population (2010 Census).

Reference 2: New York City, Philadelphia, Boston, Pittsburgh, Providence, Hartford, Buffalo, Rochester, Bridgeport and Worcester.

Source: http://en.wikipedia.org/wiki/Northeastern_United_States_(U.S._Census_Bureau)