Comune in Veneto, Italy Martellago Comune Comune di Martellago Coat of arms Location of Martellago Martellago Location of Martellago in Italy Show map of Italy Martellago Martellago (Veneto) Show map of Veneto Coordinates: 45°33′N 12°10′E﻿ / ﻿45.550°N 12.167°E﻿ / 45.550; 12.167 Country Italy Region Veneto Metropolitan city Venice (VE) Frazioni Maerne, Olmo Government • Mayor Andrea Saccarola Area [1] • Total 20 km2 (8 sq mi) Elevation 12 m (39 ft) Population (31 December 2009)[2] • Total 21,223 • Density 1,100/km2 (2,700/sq mi) Demonym Martellacensi Time zone UTC+1 (CET) • Summer (DST) UTC+2 (CEST) Postal code 30030 Dialing code 041 Patron saint St. Stephen Saint day December 26 Website Official website