​The state of Pennsylvania is divided into 67 counties.

A Metropolitan Statistical Area (MSA) is a geographic entity defined by the federal Office of Management and Budget for use by federal statistical agencies based on the concept of a core area with a large population nucleus plus adjacent communities having a high degree of economic and social integration with that core. Current qualification of an MSA requires the presence of a city with 50,000 or more inhabitants or the presence of an Urbanized Area (UA) and a total population of at least 100,000. Pennsylvania currently has 18 MSAs.

A Workforce Development Area (WDA) is a labor market area, established by the Governor, consisting of contiguous counties where employment, training, and educational services are provided as established under the Workforce Innovation and Opportunity Act (WIOA). WDAs were originally defined under the Workforce Investment Act (WIA) of 1998 and have remained largely unchanged. Data from CWIA are often available for 22 WDAs covering all 67 counties in the commonwealth.