the population are between 0 and 9 years old and 956 teenagers or 13.8% are between 10 and 19. Of the adult population, 935 people or 13.5% of the population are between 20 and 29 years old. 876 people or 12.6% are between 30 and 39, 1,174 people or 16.9% are between 40 and 49, and 974 people or 14.1% are between 50 and 59. The senior population distribution is 664 people or 9.6% of the population are between 60 and 69 years old, 400 people or 5.8% are between 70 and 79, there are 205 people or 3.0% who are between 80 and 89, and there are 49 people or 0.7% who are 90 and older. , there were 2,475 private households in the municipality, and an average of 2.5 persons per household. there were 816 single family homes (or 74.2% of the total) out of a total of 1,099 inhabited buildings. There were 109 two family buildings (9.9%), 36 three family buildings (3.3%) and 138 multi-family buildings (or 12.6%). There were 1,327 (or 20.9%) persons who were part of a couple without children, and 3,619 (or 56.9%) who were part of a couple with children. There were 308 (or 4.8%) people who lived in single parent home, while there are 32 persons who were adult children living with one or both parents, 24 persons who lived in a household made up of relatives, 46 who lived in a household made up of unrelated persons, and 243 who are either institutionalized or live in another type of collective housing. The vacancy rate for the municipality, , was 1.8%. , the construction rate of new housing units was 10.7 new units per 1000 residents. there were 2,785 apartments in the municipality. The most common apartment size was the 4 room apartment of which there were 799. There were 109 single room apartments and 432 apartments with six or more rooms. the average price to rent an average apartment in Sirnach was 989.33 Swiss francs (CHF) per month (US$790, £450, €630 approx. exchange rate from 2000). The average rate for a one-room apartment was 477.90 CHF (US$380, £220, €310), a two-room apartment was about 713.65 CHF (US$570, £320, €460), a three-room apartment was about 872.81 CHF (US$700, £390, €560) and a six or more room apartment cost an average of 1588.87 CHF (US$1270, £710, €1020). The average apartment price in Sirnach