Final answer:
The nearest Federal Reserve Bank to Dallastown is the one located in Philadelphia, as it is the regional Federal Reserve for the area.
Step-by-step explanation:
The closest Federal Reserve Bank to Dallastown is in Philadelphia. The Federal Reserve System, which is the central banking system of the United States, is divided into twelve regions, each with its own regional Federal Reserve Bank. Dallastown falls into the jurisdiction of the Philadelphia Federal Reserve, which is part of the Third District, one of the twelve regional Federal Reserve banks.