The economic publications published by the Data Center draw from two main sources: the U.S.Census Bureau's Economic Census, and the Pennsylvania Department of Labor and Industry's Unemployment Compensation data.
The Economic Census is the most comprehensive view of the United States' economy. Conducted once every 5 years, the Economic Census provides data on the number of business establishments, employees, payroll, and economic output of a wide variety of industries, for the state, county, and larger municipalities.
The Pennsylvania Department of Labor and Industry's Unemployment Compensation Covered Employment and Wages, as published in the Pennsylvania County Industry Trends, includes year-by-year detail on the total number of business establishments and employees in a variety of industries, for the state and counties.
1997 Economic Census Pennsylvania
2002 Economic Census Pennsylvania
Pennsylvania County Industry Trends