Of the adult population, 1,525 people or 14.3% of the population are between 20 and 29 years old. 1,607 people or 15.0% are between 30 and 39, 1,678 people or 15.7% are between 40 and 49, and 1,381 people or 12.9% are between 50 and 59. The senior population distribution is 1,095 people or 10.2% of the population are between 60 and 69 years old, 894 people or 8.4% are between 70 and 79, there are 509 people or 4.8% who are between 80 and 89, and there are 93 people or 0.9% who are 90 and older. The historical population is given in the following table: Housing , there were 554 homes with 1 or 2 persons in the household, 2,318 homes with 3 or 4 persons in the household, and 1,338 homes with 5 or more persons in the household. , there were 4,328 private households (homes and apartments) in the municipality, and an average of 2.1 persons per household. there were 1,318 single family homes (or 25.0% of the total) out of a total of 5,269 homes and apartments. There were a total of 54 empty apartments for a 1.0% vacancy rate. , the construction rate of new housing units was 6.5 new units per 1000 residents. the average price to rent an average apartment in Zofingen was 1063.57 Swiss francs (CHF) per month (US$850, £480, €680 approx. exchange rate from 2003). The average rate for a one-room apartment was 592.19 CHF (US$470, £270, €380), a two-room apartment was about 787.80 CHF (US$630, £350, €500), a three-room apartment was about 937.35 CHF (US$750, £420, €600) and a six or more room apartment cost an average of 1694.74 CHF (US$1360, £760, €1080). The average apartment price in Zofingen was 95.3% of the national average of 1116 CHF. Politics In the 2007 federal election the most popular party was the SVP which received 27.78% of the vote. The next three most popular parties were the SP (23.15%), the FDP (17.17%) and the Green Party (9.73%). In the federal election, a total of 3,746 votes were cast, and the voter turnout was 48.7%. Mayors of Zofingen Heritage sites of national significance There are ten buildings or sites that are listed as Swiss heritage sites of national significance. The oldest is the Roman era farm house with mosaic floors at Hirzeberg. The former armory at General-Guisan-Strasse 12 and the former Quarantine