and 89, and there are 14 people or 0.4% who are 90 and older. , there were 1,120 private households in the municipality, and an average of 2.7 persons per household. there were 477 single family homes (or 79.2% of the total) out of a total of 602 inhabited buildings. There were 51 two family buildings (8.5%), 15 three family buildings (2.5%) and 59 multi-family buildings (or 9.8%). There were 598 (or 19.5%) persons who were part of a couple without children, and 1,884 (or 61.4%) who were part of a couple with children. There were 169 (or 5.5%) people who lived in single parent home, while there are 16 persons who were adult children living with one or both parents, 6 persons who lived in a household made up of relatives, 27 who lived in a household made up of unrelated persons, and 79 who are either institutionalized or live in another type of collective housing. The vacancy rate for the municipality, , was 5.22%. , the construction rate of new housing units was 1.9 new units per 1000 residents. there were 1,253 apartments in the municipality. The most common apartment size was the 4 room apartment of which there were 358. There were 18 single room apartments and 248 apartments with six or more rooms. the average price to rent an average apartment in Erlen was 994.51 Swiss francs (CHF) per month (US$800, £450, €640 approx. exchange rate from 2000). The average rate for a one-room apartment was 660.00 CHF (US$530, £300, €420), a two-room apartment was about 599.36 CHF (US$480, £270, €380), a three-room apartment was about 806.15 CHF (US$640, £360, €520) and a six or more room apartment cost an average of 1472.35 CHF (US$1180, £660, €940). The average apartment price in Erlen was 89.1% of the national average of 1116 CHF. In the 2007 federal election the most popular party was the SVP which received 49.14% of the vote. The next three most popular parties were the CVP (12.62%), the FDP (11.23%) and the SP (8.35%). In the federal election, a total of 844 votes were cast, and the voter turnout was 43.1%. The historical population is given in the following table: Population for the entire, combined municipality Sights The entire village of Erlen-Eppishausen is designated as part of the Inventory of Swiss Heritage Sites. Economy , Erlen had an unemployment rate of 1.74%. ,