Comune in Marche, Italy Castelfidardo Comune Comune di Castelfidardo Coat of arms Location of Castelfidardo Castelfidardo Location of Castelfidardo in Italy Show map of Italy Castelfidardo Castelfidardo (Marche) Show map of Marche Coordinates: 43°13′N 13°23′E﻿ / ﻿43.217°N 13.383°E﻿ / 43.217; 13.383 Country Italy Region Marche Province Ancona (AN) Frazioni Acquaviva, Campanari, Cerretano, Crocette, Figuretta, Fornaci, Sant'Agostino, San Rocchetto Government • Mayor Roberto Ascani Area [1] • Total 32 km2 (12 sq mi) Elevation 215 m (705 ft) Population (31 December 2017)[2] • Total 18,601 • Density 580/km2 (1,500/sq mi) Demonym(s) Fidardensi Time zone UTC+1 (CET) • Summer (DST) UTC+2 (CEST) Postal code 60022 Dialing code 071 Patron saint St. Victor Saint day May 14 Website Official website