Tronzano Vercellese Comune Comune di Tronzano Vercellese Tronzano Vercellese Location of Tronzano Vercellese in Italy Coordinates: 45°21′N 8°10′E﻿ / ﻿45.350°N 8.167°E﻿ / 45.350; 8.167Coordinates: 45°21′N 8°10′E﻿ / ﻿45.350°N 8.167°E﻿ / 45.350; 8.167 Country Italy Region Piedmont Province Province of Vercelli (VC) Frazioni Salomino Area • Total 44.9 km2 (17.3 sq mi) Population (Dec. 2004) • Total 3,519 • Density 78/km2 (200/sq mi) Demonym(s) Tronzanesi Time zone CET (UTC+1) • Summer (DST) CEST (UTC+2) Postal code 13049 Dialing code 0161