Fred and Christine Thieman migrated from the suburbs to Downtown when their youngest child went to college about three years ago.
That year, for the first time in more than 90 years, the nation’s biggest cities, including Pittsburgh, grew faster than their suburbs, according to the Brookings Institution, a Washington policy group.
The trend continued in each of the past two years, though growth rates for cities and suburbs hover around 1 percent and the gap between them is narrowing, Brookings reported in May.
But the population living Downtown has soared. Census data show the area was home to 12,343 people last year, up 10.5 percent from 2010.