A majority of counties in the United States are getting older. In Virginia, particularly in the north-south corridor along U.S. 29, the population of residents ages 65 and older is increasing, according to new estimates by the U.S. Census Bureau. That could impact voting trends, emergency services, tax rates and more in Central Virginia. “The biggest thing, really, is many counties aren’t seeing a growth of jobs, so you have outmigration of young people and an inflow of retirees,” said Hamilton Lombard, a researcher with the University of Virginia’s Weldon Cooper Center for Public Service. “I ...