Serravalle Sesia Comune Comune di Serravalle Sesia Piazza della Libertà Coat of arms Serravalle Sesia Location of Serravalle Sesia in Italy Coordinates: 45°41′N 8°19′E﻿ / ﻿45.683°N 8.317°E﻿ / 45.683; 8.317 Country Italy Region Piedmont Province Vercelli (VC) Frazioni Bornate, Gattera, Piane Sesia, Vintebbio Government • Mayor Massimo Basso (Lega Nord) Area • Total 20.4 km2 (7.9 sq mi) Population (31 December 2004[1]) • Total 5,124 • Density 250/km2 (650/sq mi) Demonym(s) Serravallesi Time zone CET (UTC+1) • Summer (DST) CEST (UTC+2) Postal code 13037 Dialing code 0163 Website Official website