List of United States combined statistical areas

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 United States Office of Management and Budget 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 is that the social and economic ties between the individual MSAs 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 25. CSAs often represent regions with overlapping labor and media markets.

As of July 2012, there are 166 combined statistical areas in the United States, plus three in Puerto Rico.

The following sortable table lists the 166 combined statistical areas (CSAs) of the United States with the following information

(Metropolitan Statistical Areas that are not combined with other MSAs or CBSAs are not also listed below).

The following sortable table lists the three Combined Statistical Areas (CSAs) of Puerto Rico with the following information:

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