The city of
Portland, Maine, is the hub city of a
metropolitan area in southern
Maine, commonly known as
greater Portland or the
Portland metropolitan area. For statistical purposes, the U.S. federal government defines three different representations of the Portland metropolitan area. The
Portland–South Portland–Biddeford, ME Metropolitan Statistical Area is a region consisting of three counties in
Maine, anchored by the city of
Portland and the smaller cities of
South Portland and
Biddeford. As of the
2010 census, the MSA had a population of 514,098. A larger
combined statistical area (CSA), the
Portland–Lewiston–South Portland Combined Statistical Area, is defined as the combination of this
metropolitan statistical area (MSA) with the adjacent Lewiston–Auburn MSA. The CSA comprises four counties in southern Maine. The
Portland-South Portland Metropolitan New England City and Town Area is defined on the basis of cities and
towns rather than entire counties. It consists of most of Cumberland and York counties plus the town of Durham in Androscoggin County.