Pennsylvania statistical areas

The United States currently has 48 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated 12 combined statistical areas, 16 metropolitan statistical areas, and 20 micropolitan statistical areas in Pennsylvania. As of 2023, the largest of these is the Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA, comprising the area around the state's largest city of Philadelphia in the southeast region of the state.

Primary statistical areas
Primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area. Of the 48 statistical areas of Pennsylvania, 21 are PSAs, consisting of 12 combined statistical areas, two metropolitan statistical areas and seven micropolitan statistical areas.