Caslano is a municipality in the district of Lugano in the Swiss canton of Ticino, near to the Italian border.

The hamlet of Torrazza was the source of bitter fighting between the Swiss Confederation and the Duchy of Milan.

In 1604, the Treaty of Varese decided against the Italian municipality of Lavena Ponte Tresa and finally awarded it to Caslano.

The pre-industrial economy was based on fisheries, mines and kilns for lime and clay, transport by sea, agriculture and by remittances from emigrants.

The local wealth is shown in the quality of the buildings in the village and in the neighboring towns of Pura and Collina d'Oro.

Construction began throughout the village, and it grew into a tourist destination with a number of suburbs.

The blazon of the municipal coat of arms is Gules a castle argent doors and windows sable and fir tree vert both issuant from a mount of the last in turn issuing from a base wavy azure fimbriated of the second.

Most of the population (as of 2000[update]) speaks Italian (75.7%), with German being second most common (15.6%) and French being third (2.2%).

[7] The age distribution, as of 2009[update], in Caslano is; 389 children or 9.7% of the population are between 0 and 9 years old and 486 teenagers or 12.2% are between 10 and 19.

[8] The historical population is given in the following chart:[3] The entire villaggio of Caslano is designated as part of the Inventory of Swiss Heritage Sites.

[13] In the 2007 federal election the most popular party was the CVP which received 24.33% of the vote.

In the federal election, a total of 1,002 votes were cast, and the voter turnout was 43.9%.

[14] In the 2007[update] Gran Consiglio election, there were a total of 2,286 registered voters in Caslano, of which 1,187 or 51.9% voted.

[8] There were 1,560 residents of the municipality who were employed in some capacity, of which females made up 43.7% of the workforce.

[17] From the 2000 census[update], 2,564 or 73.4% were Roman Catholic, while 404 or 11.6% belonged to the Swiss Reformed Church.

In the lower secondary school system, students either attend a two-year middle school followed by a two-year pre-apprenticeship or they attend a four-year program to prepare for higher education.

The professional program lasts three years and prepares a student for a job in engineering, nursing, computer science, business, tourism and similar fields.

The station is located some 1 kilometre (0.62 mi) from the village, and is served by regular trains, operating every 15 minutes during weekday daytime, and every half-hour at other times.