San Giacomo Vercellese Comune Comune di San Giacomo Vercellese San Giacomo Vercellese Location of San Giacomo Vercellese in Italy Coordinates: 45°30′N 8°20′E﻿ / ﻿45.500°N 8.333°E﻿ / 45.500; 8.333Coordinates: 45°30′N 8°20′E﻿ / ﻿45.500°N 8.333°E﻿ / 45.500; 8.333 Country Italy Region Piedmont Province Province of Vercelli (VC) Area • Total 9.6 km2 (3.7 sq mi) Population (Dec.