Homeland Infrastructure Foundation Level Data HIFLDCombined Statistical Areas; January 1, 2024 vintage 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.FileengPennsylvania Spatial Data Access (PASDA)PublicCombined Statistical Areas [Pennsylvania]DatasetsPennsylvania