A Metropolitan Statistical Area (MSA) containing a single core with a population of 2.5 million or more may be subdivided to form smaller groupings of counties referred to as metropolitan divisions. In the 2010 Census: Fredericksburg, Virginia is part of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Division.
The Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area (MSA) is part of the Washington Baltimore Arlington, DC-MD-VA-WV-PA Combined Statistical Area (CSA). The other MSA in this CSA is the Baltimore-Columbia-Towson, MD MSA.
A Combined Statistical Area (CSA) is composed of adjacent Metropolitan (MSA) and Micropolitan Statistical Areas (µSA) in the United States and Puerto Rico that can demonstrate economic or social linkage.
The Office of Management and Budget (OMB) defines metropolitan areas for purposes of collecting, tabulating, and publishing federal data.
The Metro Area profile data can be found from the Census Reporter. Included in the profile are demographic data on population, economics, housing, family, social, and more. Here is the link to Washington-Arlington-Alexandria, DC-VA-MD-WV Metro Area data.
The Census Bureau reports data for a wide variety of geographic entities ranging in size from the entire United States to a Census Block. Some entities follow recognized boundaries such as counties and cities, while others have been created by the Census Bureau.
Click the Geography Atlas to view definitions of Census geographic entities.
Nation - United States
Region - South
Division - South Atlantic
Combined Statistical Area (CSA) - Washington Baltimore Arlington, DC-MD-VA-WV-PA
Metropolitan Statistical Area (MSA) - Washington-Arlington-Alexandria, DC-VA-MD-WV
Metropolitan Division - Washington-Arlington-Alexandria, DC-VA-MD-WV
State - Virginia
You will see tables with these geographic categories (e.g., BLS guide to inflation, prices and consumer spending).