The Piedmont Triad is a metropolitan region in the north-central part of the U.S. state of North Carolina anchored by three cities: Greensboro, Winston-Salem, and High Point. This close group of cities lies in the Piedmont geographical region of the United States and forms the basis of the Greensboro–Winston-Salem–High Point, NC Combined Statistica…The Piedmont Triad is a metropolitan region in the north-central part of the U.S. state of North Carolina anchored by three cities: Greensboro, Winston-Salem, and High Point. This close group of cities lies in the Piedmont geographical region of the United States and forms the basis of the Greensboro–Winston-Salem–High Point, NC Combined Statistical Area. As of 2012, the Piedmont Triad has an estimated population of 1,611,243 making it the 33rd largest combined statistical area in the United States.