Map uploaded on January 23, 2017.
While there are significant portion of the population are German of in rural portions of Lancaster County (traditional Pennsylvania Dutch Country), Germans decedents are common across Pennsylvania, especially in rural areas south west of Scranton, especially around Lewisburg, and also around St. Marys and Ohiopyle. There is a lot of overlap in areas with German decedents and Dutch (persons from Holland) descendants in Pennsylvania.
ACS 2015-2010 5 Year Average, B04006, PEOPLE REPORTING ANCESTRY, Universe: Total population
A look at the various demographic trends in the commonwealth of Pennsylvania.
More maps, photos from PA Census.