HIFLD OPEN Combined Statistical Areas
Homeland Infrastructure Foundation-Level Data (HIFLD) ·Department of Homeland Security
Archived Resources
Combined Statistical Areas (CSAs) consist of two or more adjacent CBSAs that have substantial employment interchange. The CBSAs that combine to create a CSA retain separate identities within the larger CSA. Because CSAs represent groupings of metropolitan and/or micropolitan statistical areas, they should not be ranked or compared with individual metropolitan and micropolitan statistical areas.