2010 Population Over 60: 23.6%
2010 Population Under 15: 16.3%
One of the main factors that has made Pittsburgh the greyest metro area in America is its migration deficit. It has lost some 2% of its population to other places over the past decade, ranking it 34th among the 51 biggest metro areas in net domestic migration. It also ranks second to last in the number of immigrants it has attracted from abroad over the same period.