波士顿的CSA已经超出麻省范围了。
https://en.wikipedia.org/wiki/Greater_Boston


Combined Statistical Area (CSA)

A wider functional metropolitan area based on commuting patterns is also defined by the Office of Management and Budget as the Boston–Worcester–Providence combined statistical area. This area consists of the metropolitan areas of Manchester, Worcester, Providence, as well as Cape Cod, in addition to greater Boston. The total population as of 2018 for the extended region was estimated at 8,285,417. The following areas, along with the above MSA, are included in the combined statistical area, with their estimated 2018 populations:

Providence–Warwick, RI–MA Metropolitan Statistical Area (1,621,337)
Bristol County, Massachusetts (564,022)
Bristol County, Rhode Island (48,649)
Kent County, Rhode Island (163,861)
Newport County, Rhode Island (82,542)
Providence County, Rhode Island (636,084)
Washington County, Rhode Island (126,179)
Worcester, MA–CT Metropolitan Statistical Area (947,876)
Worcester County, Massachusetts (830,839)
Windham County, Connecticut (117,027)
Manchester–Nashua, NH Metropolitan Statistical Area (415,247)
Hillsborough County, New Hampshire (415,247)
Barnstable Town, MA Metropolitan Statistical Area (213,413)
Barnstable County, Massachusetts (213,413)
Concord, NH Micropolitan Statistical Area (151,132)
Merrimack County, New Hampshire (151,132)
Laconia, NH Micropolitan Statistical Area (61,022)
Belknap County, New Hampshire (61,022)


【 在 wyid (yz) 的大作中提到: 】
: 整个麻省才600多万，波士顿大都市区800万？你这个大都市区面积有多大，
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