Catholic Population of Pennsylvania - 1757
from Shea's "History of the Catholic Church in the United States"

An Inquiry instituted by Lord Loudon gives us the Catholic population of Pennsylvania in 1757:

Men Women Under the Care of Fr. Robert Harding
In and near Philidelphia: Irish or English 72 78
Chester County: 18 22

Under the Care of Fr. Theodore Schneider
      In & About Philadelphia: All Germans 107 121
      Philadelphia County, Upcountry: 15 10
      Berks County: 62 55
      Northampton County: 68 62, Irish 17 12
      Bucks County: 14 12
      Chester County: 13 9, Irish 9 6

Under the Care of Father Ferdinand Farmer
      Lancaster County: German 108 94, Irish 22 27
      Berks County: German 41 39, Irish 5 3
      Chester County; German 3, Irish 23 17
      Cumberland County: Irish 6 6

Under the Care of Fr. Matthias Manners
York County: German 54 62, Irish 35 38