Chiaso is a municipality in Mendresio district in Canton of Ticino in Switzerland. In the southern part of Switzerland's municipalities, Chiaso is located on the border with Italy. Ponte Chiasso Como, a frozen of Italy. The municipality of Chioso includes Bofallora, Pedrinet and Szeglio. In 2007, three mayors of Chioso, Wicho and Morbio Inferiore decided to unite in a commune. With a population of approximately 15,300 people in the area of 9.2 km, the new united commune was rejected from the population in November 2007.
Chiaso's history and development were greatly influenced by its unique location. During its initial history, a castle was built in Chiaso as part of the extended fortifications of the city of Komas. This was a suburb of Como until 1416, when it was included in the Pereren of Ballaratna and given to the Rusca family to manage. In the center of the village, the ownership of the houses was owned by the Alberi family and they were given royal privileges. Prior to 1552, Chiaso had become an independent community. In contemporary documents, it is referred to as Clasio tabernam the bars are referred to as Chiaso, which refers to its function as a transit point.