The Baltimore-Towson Metropolitan Statistical Area, also known as Central Maryland, is a Metropolitan Statistical Area (MSA) in Maryland as defined by the United States Office of Management and Budget (OMB). As of the 2010 Census, the combined population of the seven counties is 2,710,489.

The area includes the following counties:

The metropolitan area includes the following principal communities :

It also includes several other communities (not necessarily incorporated as cities or towns):

In addition to its technical metropolitan area, Baltimore also receives a large number of commuters from cities such as York, Pennsylvania and the Washington Metropolitan Area.

Coordinates: 39°16′59.86″N 76°36′27.6″W / 39.2832944°N 76.607667°W / 39.2832944; -76.607667

Baltimore ( /ˈbɒltɨmɔr/, colloquially /ˈbɔl.mɔr/) is the largest city in the U.S. state of Maryland. It is located in the central area of the state along the tidal portion of the Patapsco River, an arm of the Chesapeake Bay. The independent city is often referred to as Baltimore City to distinguish it from surrounding Baltimore County.

Founded in 1729, Baltimore is the largest seaport in the Mid-Atlantic United States and is situated closer to Midwestern markets than any other major seaport on the East Coast. Baltimore's Inner Harbor was once the second leading port of entry for immigrants to the United States and a major manufacturing center. After a decline in manufacturing, Baltimore shifted to a service-oriented economy.

At 620,961 residents in 2010, Baltimore's population has decreased by one-third since its peak in 1950. The Baltimore Metropolitan Area has grown steadily to approximately 2.7 million residents in 2010; the 20th largest in the country. Baltimore is also a principal city in the larger Baltimore–Washington combined statistical area of approximately 8.4 million residents.

The term metropolitan area refers to a region consisting of a densely populated urban core and its less-populated surrounding territories, sharing industry, infrastructure, and housing. A metropolitan area usually comprises multiple jurisdictions and municipalities: neighborhoods, townships, cities, exurbs, counties, and even states. As social, economic and political institutions have changed, metropolitan areas have become key economic and political regions.

A metropolitan area combines an urban agglomeration (the contiguous, built-up area) with zones not necessarily urban in character, but closely bound to the center by employment or other commerce. These outlying zones are sometimes known as a commuter belt, and may extend well beyond the urban zone, to other political entities. For example, El Monte, California is considered part of the Los Angeles' metro area.

In practice, the parameters of metropolitan areas, in both official and unofficial usage, are not consistent. Sometimes they are little different from an urban area, and in other cases they cover broad regions that have little relation to a single urban settlement; comparative statistics for metropolitan area should take this into account. Population figures given for one metro area can vary by millions, and there is a tendency for people to promote the highest figure available for their own "city". However the most ambitious metropolitan area population figures are often better seen as the population of a "metropolitan region" than of a "city".^{[citation needed]}