Preonzo is a former municipality in the district of Bellinzona in the canton of Ticino in Switzerland.
On 2 April 2017, the former municipalities of Camorino, Claro, Giubiasco, Gnosca, Gorduno, Moleno, Monte Carasso, Pianezzo, Sant'Antonio and Sementina merged into the municipality of Bellinzona.
Wikipedia https://en.wikipedia.org/wiki/Preonzo
Official Website https://www.bellinzona.ch/
Coordinates 46°15'54.075" N 9°0'1.484" E