The first mayor elected was Emilio Filippini, who held the position until 2016.1 Medeglia is first mentioned in 1195 as Medellia.

[7] During the High Middle Ages, Medeglia was probably part of the old valley community of Carvina which eventually came under the authority of Lugano.

In 1501-03 Medeglia and Isone were transferred to the county of Bellinzona, but they remained part of the pieve of Agno.

Starting in the 16th century the residents of Isone and Medeglia bought forests and pastures as far away as Robasacco, Contone, Cadenazzo, Sant'Antonino and Camorino while at the same time opening up trade relations with Bellinzona.

[3] By 1000, Bironico was the secular and religious center of the Carvina region, which included the middle and upper Vedeggio valley.

Beginning in the 16th century, an inn at the bridge over the Leguana river served as a meeting place of the Confederation's ministers.

Today there is some industry in the village, but most workers commute to jobs in the lower Vedeggio valley, Lugano and Bellinzona.

[4] In the Middle Ages Camignolo was part of the parish of Bironico and valley community of Valle Carvina.

Like other communities in the valley, during the 19th century many residents emigrated to escape the poverty and limited farm land.

It has slowly developed into a minor regional center and a secondary school was built in the village.

[5] The oldest traces of a settlement in the area include scattered artifacts and graves from the Iron Age and the Roman era.

Starting in 1678, representatives from the twelve members of the Swiss Confederation in Ticino met in Casa dei landfogti before they assembled in Lugano.

The completion of the road in 1811 and the construction of the tunnel and the station led to the emergence of a new district in the flatter part of the valley.

[9] The historical population is given in the following chart:[3][4][5][6][7][11] The Ruderi Del Castello Di S. Sofia and Stazione Radio Monte Ceneri are listed as Swiss heritage site of national significance.

The entire village of Osignano is designated as part of the Inventory of Swiss Heritage Sites.

[13] In 2014 the crime rate, of the over 200 crimes listed in the Swiss Criminal Code (running from murder, robbery and assault to accepting bribes and election fraud), in Monteceneri was 55 per thousand residents, slightly lower than the national average (64.6 per thousand).

The rate of violations of immigration, visa and work permit laws was 4.4 per thousand residents.

The driest month was February during which time Bironico received an average of 64 millimeters (2.5 in) of rain or snow.