Combined statistical area (CSA) is a
United States Office of Management and Budget (OMB) term for a combination of adjacent
metropolitan
Metropolitan may refer to:
* Metropolitan area, a region consisting of a densely populated urban core and its less-populated surrounding territories
* Metropolitan borough, a form of local government district in England
* Metropolitan county, a typ ...
(MSA) and
micropolitan statistical areas (µSA) across the 50
US states and the territory of
Puerto Rico
Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and Unincorporated ...
that can demonstrate economic or social linkage. CSAs were first designated in 2003.
The OMB defines a CSA as consisting of various combinations of adjacent metropolitan and micropolitan areas with economic ties measured by commuting patterns. These areas that combine retain their own designations as metropolitan or micropolitan statistical areas within the larger combined statistical area.
The primary distinguishing factor between a CSA and an
MSA/µSA is that the social and economic ties between the individual MSAs/µSAs within a CSA are at lower levels than between the counties within an MSA.
CSAs represent multiple metropolitan or micropolitan areas that have an employment interchange of at least 15%.
[ CSAs often represent regions with overlapping labor and media markets.
As of 2021, there are 172 combined statistical areas across the United States, plus another three in the territory of Puerto Rico.][
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List of combined statistical areas
The following table lists the 172 combined statistical areas (CSAs) of the United States with the following information:
#The CSA rank by population as of July 1, 2021, as estimated by the United States Census Bureau
The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy
An economy is an area of th ...
[
#The CSA populatio]