Costanzana Comune Comune di Costanzana Coat of arms Costanzana Location of Costanzana in Italy Coordinates: 45°14′09″N 8°22′11″E﻿ / ﻿45.23583°N 8.36972°E﻿ / 45.23583; 8.36972Coordinates: 45°14′09″N 8°22′11″E﻿ / ﻿45.23583°N 8.36972°E﻿ / 45.23583; 8.36972 Country Italy Region Piedmont Province Vercelli (VC) Government • Mayor Gian Luigi Guasco Area • Total 21.1 km2 (8.1 sq mi) Population (Dec.