Visco is a comune in the Regional decentralization entity of Udine in the Italian region of Friuli-Venezia Giulia, located about 45 kilometres nor…Visco is a comune in the Regional decentralization entity of Udine in the Italian region of Friuli-Venezia Giulia, located about 45 kilometres northwest of Trieste and about 20 kilometres southeast of Udine. As of 31 December 2004, it had a population of 723 and an area of 3.5 square kilometres.