of some sort of institution or another collective housing. there were 22 single family homes (or 55.0% of the total) out of a total of 40 inhabited buildings. There were 5 multi-family buildings (12.5%), along with 12 multi-purpose buildings that were mostly used for housing (30.0%) and 1 other use buildings (commercial or industrial) that also had some housing (2.5%). , a total of 38 apartments (77.6% of the total) were permanently occupied, while 7 apartments (14.3%) were seasonally occupied and 4 apartments (8.2%) were empty. , the construction rate of new housing units was 0 new units per 1000 residents. The vacancy rate for the municipality, , was 3.92%. The historical population is given in the following chart: Heritage sites of national significance The Swiss Reformed church of Saint-Jean-Baptiste is listed as a Swiss heritage site of national significance. The entire village of Treytorrens is part of the Inventory of Swiss Heritage Sites. Politics In the 2007 federal election the most popular party was the SVP which received 48.66% of the vote. The next three most popular parties were the FDP (20.13%), the PdA Party (7.52%) and the Green Party (6.24%). In the federal election, a total of 45 votes were cast, and the voter turnout was 49.5%. Economy , Treytorrens had an unemployment rate of 0.8%. , there were 21 people employed in the primary economic sector and about 9 businesses involved in this sector. 4 people were employed in the secondary sector and there was 1 business in this sector. No one was employed in the tertiary sector. There were 60 residents of the municipality who were employed in some capacity, of which females made up 36.7% of the workforce. the total number of full-time equivalent jobs was 19. The number of jobs in the primary sector was 15, all of which were in agriculture. The number of jobs in the secondary sector was 4, all of which were in construction. , there were 3 workers who commuted into the municipality and 36 workers who commuted away. The municipality is a net exporter of workers, with about 12.0 workers leaving the municipality for every one entering. Of the working population, 11.7% used public transportation to get to work, and 51.7% used a private car. Religion From the , 14 or 13.7% were Roman Catholic, while 76 or 74.5% belonged to the Swiss Reformed Church. Of the rest