There are 19 US Post Offices in Allegany County serving a total of 77,187 residents equating to 4,062 residents per post office. It's estimated that approximately 123,199 packages are handled across the 19 county post offices annually. Allegany County is a county located in the northwestern part of the U.S. state of Maryland. As of the 2010 census, the population was 75,087. Its county seat is Cumberland. The name Allegany may come from a local Lenape word, welhik hane or oolikhanna, which means 'best flowing river of the hills' or 'beautiful stream'. A number of counties in the Appalachian region of the US are named Allegany, Allegheny, or Alleghany. Allegany County is part of the Cumberland, MD-WV Metropolitan Statistical Area. It is a part of the Western Maryland \"panhandle\"."