Piazzogna is a former municipality in the district of Locarno in the canton of Ticino in Switzerland.

The arbitration dealt with the rights of neighboring villages to use alpine meadows.

The original village church of S. Antonio Abate was probably built in the Middle Ages in the romanesque style.

In the wake of the village's independence from the parish of Vira in 1837, this church was expanded several times in the 19th century.

[2] The hamlet of Alabardia, once part of the parish of San Nazzaro, became widely known in 1783 as the center of Horace-Bénédict de Saussure barometric experiments conducted around Lake Maggiore.

[2] Piazzogna has an area, as of 1997[update], of 3.87 square kilometers (1.49 sq mi).

Out of the forested land, 57.9% of the total land area is heavily forested, while 19.9% is covered in small trees and shrubbery and 2.6% is covered with orchards or small clusters of trees.

[3] The village is located in the Locarno district, on a terrace above the Gambarogno valley.

The blazon of the municipal coat of arms is Vert a tau cross patte couped argent and in base two fleurs-de-lis or.

[5] The age distribution, as of 2009[update], in Piazzogna is; 35 children or 8.9% of the population are between 0 and 9 years old and 32 teenagers or 8.2% are between 10 and 19.

[9] About 58.5% of the total households were owner occupied, or in other words did not pay rent (though they may have a mortgage or a rent-to-own agreement).

[6] The historical population is given in the following table:[2] In the 2007 federal election the most popular party was the FDP which received 29.28% of the vote.

In the federal election, a total of 123 votes were cast, and the voter turnout was 42.1%.

[13] In the 2007[update] Gran Consiglio election, there were a total of 303 registered voters in Piazzogna, of which 197 or 65.0% voted.

[6] There were 156 residents of the village who were employed in some capacity, of which females made up 37.8% of the workforce.

[16] From the 2000 census[update], 281 or 77.6% were Roman Catholic, while 28 or 7.7% 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.