Pennsylvania's senior citizen population continues to grow, which could help senior-living providers target a larger group of potential residents. Many senior-living communities have been expanding in recent years to meet growing demands from an aging population.

The U.S. Census Bureau recently released new population estimates that account for and compare the resident population for counties between April 1, 2010 and July 1, 2018. The outcome? There are shifts in population taking place across the nation that may differ from what you might assume. Here are the highlights at a national and local level.

Silver Spring Township has been the second-fastest growing township in Pennsylvania this decade; Lebanon and Mount Joy were each fifth among cities and boroughs.

Cumberland County remains the fastest-growing county in the commonwealth, but Lebanon and Lancaster counties are not far behind.