collective housing. there were 741 single family homes (or 59.2% of the total) out of a total of 1,251 inhabited buildings. There were 346 multi-family buildings (27.7%), along with 103 multi-purpose buildings that were mostly used for housing (8.2%) and 61 other use buildings (commercial or industrial) that also had some housing (4.9%). Of the single family homes 51 were built before 1919, while 162 were built between 1990 and 2000. The greatest number of single family homes (158) were built between 1946 and 1960. there were 2,627 apartments in the municipality. The most common apartment size was 4 rooms of which there were 920. There were 77 single room apartments and 682 apartments with five or more rooms. Of these apartments, a total of 2,375 apartments (90.4% of the total) were permanently occupied, while 135 apartments (5.1%) were seasonally occupied and 117 apartments (4.5%) were empty. , the construction rate of new housing units was 5.8 new units per 1000 residents. The vacancy rate for the municipality, , was 4.15%. The historical population is given in the following chart: Politics In the 2007 federal election the most popular party was the SP which received 25.34% of the vote. The next three most popular parties were the SVP (25.02%), the FDP (20.64%) and the CVP (16.8%). In the federal election, a total of 1,686 votes were cast, and the voter turnout was 46.2%. Economy , Derendingen had an unemployment rate of 5.1%. , there were 24 people employed in the primary economic sector and about 13 businesses involved in this sector. 675 people were employed in the secondary sector and there were 57 businesses in this sector. 1,012 people were employed in the tertiary sector, with 154 businesses in this sector. There were 3,101 residents of the municipality who were employed in some capacity, of which females made up 44.5% of the workforce. the total number of full-time equivalent jobs was 1,399. The number of jobs in the primary sector was 19, all of which were in agriculture. The number of jobs in the secondary sector was 613 of which 497 or (81.1%) were in manufacturing and 106 (17.3%) were in construction. The number of jobs in the tertiary sector was 767. In the tertiary sector; 208 or 27.1% were in wholesale or retail sales or the repair of motor vehicles, 128 or 16.7% were in the movement and storage