Castelguglielmo is acomune (municipality) in theProvince of Rovigo in theItalian regionVeneto, located about 80 kilometres (50 mi) southwest ofVenice and about 20 kilometres (12 mi) southwest ofRovigo. As of 31 December 2004, it had a population of 1,730 and an area of 22.1 square kilometres (8.5 sq mi).[3]
The municipality of Castelguglielmo contains thefrazioni (subdivisions, mainly villages and hamlets) Bressane, Canda, Franceschetta, Le Basse, Precona, and Presciane.