57.1% and seniors (over 64 years old) make up 21.1%. , there were 1,560 people who were single and never married in the municipality. There were 2,041 married individuals, 367 widows or widowers and 197 individuals who are divorced. , there were 698 households that consist of only one person and 119 households with five or more people. , a total of 1,789 apartments (86.2% of the total) were permanently occupied, while 159 apartments (7.7%) were seasonally occupied and 128 apartments (6.2%) were empty. , the construction rate of new housing units was 2.4 new units per 1000 residents. The vacancy rate for the municipality, , was 3.58%. The historical population is given in the following chart: Sights The entire hamlet of Le Cernil / La Chaux de Tramelan is designated as part of the Inventory of Swiss Heritage Sites. Politics In the 2011 federal election the most popular party was the Social Democratic Party (SP) which received 32.1% of the vote. The next three most popular parties were the Swiss People's Party (SVP) (25.9%), the FDP.The Liberals (8.7%) and the Green Party (8.3%). In the federal election, a total of 1,299 votes were cast, and the voter turnout was 41.2%. Economy Tramelan is also the location of the Armand Nicolet watch manufacture as well as the Tourbillon and Hairspring Manufacture Dimier. , Tramelan had an unemployment rate of 2.52%. , there were a total of 2,039 people employed in the municipality. Of these, there were 115 people employed in the primary economic sector and about 46 businesses involved in this sector. 896 people were employed in the secondary sector and there were 51 businesses in this sector. 1,028 people were employed in the tertiary sector, with 132 businesses in this sector. There were 1,931 residents of the municipality who were employed in some capacity, of which females made up 41.9% of the workforce. there were a total of 1,783 full-time equivalent jobs. The number of jobs in the primary sector was 81, all of which were in agriculture. The number of jobs in the secondary sector was 848 of which 744 or (87.7%) were in manufacturing and 97 (11.4%) were in construction. The number of jobs in the tertiary sector was 854. In the tertiary sector; 168 or 19.7% were in wholesale or retail sales or the repair of motor vehicles, 112 or 13.1% were in the movement and