It was a suburb of Como, until 1416 when it was incorporated in the Pieve of Balerna and given to the Rusca family to manage.
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Modernly, a large part of the town is devoted to Chiasso's international railway station and related customs (although some of the border-control responsibilities have been moved to Como, in Italy).
In December 1880 he participated in the Faiail Congress in Chiasso, where he supported Carlo Cafiero's anti-legal position.
While Neuchâtel Xamax came back to top division in summer 2007, he was stayed in Swiss Challenge League with his new club Chiasso.
The station is on the Swiss Federal Railways Gotthard railway, between Lugano and Chiasso, and is also the junction for the Mendrisio–Stabio railway, currently only used for freight traffic, but being rebuilt as an international connection to Varese.
The station was designed to replace Porta Tosa station (opened in 1846 as the terminus of the line to Treviglio and eventually Venice) and Porta Nuova station (opened in 1850 as the second terminus on the line to Monza, which was eventually extended to Chiasso) and was interconnected with all lines, either existing or under construction, surrounding Milan.