Oldest city in America in terms of population is Pittsburgh.
Aging America: The Cities That Are Graying The Fastest
from this forbes article ; aging america
''The oldest city in America is
Pittsburgh, where 23.6% of the metro area’s population is over 60. The old steel capital is followed by such former robust manufacturing hubs as
Buffalo (No. 3 on our list), Cleveland (fifth), and Detroit (ninth).
How did these places get so old? The biggest factor: migration deficits. More Americans have been leaving these cities than moving there, and people who move tend to be younger. Meanwhile these graying cities attract relatively few immigrants from abroad. Pittsburgh, for example, ranks 34th among the 51 biggest metro areas in net domestic migration, losing some 2% of its population to other places over the past decade. It also stands 50th in foreign immigration over the same period. Buffalo has fared even worse: it’s 40th in domestic migration and 49th in new foreign-born residents''
Most
city in the country yall