or 7.1% are between 10 and 19. Of the adult population, 68 people or 8.3% of the population are between 20 and 29 years old. 128 people or 15.7% are between 30 and 39, 155 people or 19.0% are between 40 and 49, and 119 people or 14.6% are between 50 and 59. The senior population distribution is 97 people or 11.9% of the population are between 60 and 69 years old, 77 people or 9.4% are between 70 and 79, there are 48 people or 5.9% who are over 80. , there were 348 private households in the municipality, and an average of 2. persons per household. there were 153 single family homes (or 59.3% of the total) out of a total of 258 inhabited buildings. There were 45 two family buildings (17.4%) and 40 multi-family buildings (15.5%). There were also 20 buildings in the municipality that were multipurpose buildings (used for both housing and commercial or another purpose). The vacancy rate for the municipality, , was 0%. there were 558 apartments in the municipality. The most common apartment size was the 3-room apartment of which there were 147. There were 49 single room apartments and 123 apartments with five or more rooms. Of these apartments, a total of 346 apartments (62.0% of the total) were permanently occupied, while 198 apartments (35.5%) were seasonally occupied and 14 apartments (2.5%) were empty. , the construction rate of new housing units was 2.5 new units per 1000 residents. The historical population is given in the following table: Heritage sites of national significance The Parish Church of S. Carpoforo is listed as a Swiss heritage site of national significance. The entire village of Bissone is listed in the Inventory of Swiss Heritage Sites. Politics In the 2007 federal election the most popular party was the FDP which received 36.2% of the vote. The next three most popular parties were the CVP (20.33%), the SP (18.23%) and the Ticino League (14.07%). In the federal election, a total of 266 votes were cast, and the voter turnout was 51.9%. In the Gran Consiglio election, there were a total of 517 registered voters in Bissone, of which 314 or 60.7% voted. 3 blank ballots were cast, leaving 311 valid ballots in the election. The most popular party was the PLRT which received 83 or 26.7% of the vote. The next three most popular parties were;