This publication is a useful reference guide to planners and persons in the transportation industry. It contains two tables, several summaries, graphics and an analysis. Table One consists of the number of commuters who are Pennsylvania residents by the county of residence and the county of work. Table Two consists of 1) Pennsylvania residents who work out of state by county of residence and state of work; 2) out-of-state residents who work in Pennsylvania by county of work and state of residence; and 3) net workers.