is about equal to the cantonal average of 0.56 per room. In this case, a room is defined as space of a housing unit of at least as normal bedrooms, dining rooms, living rooms, kitchens and habitable cellars and attics. About 66.8% of the total households were owner occupied, or in other words did not pay rent (though they may have a mortgage or a rent-to-own agreement). , there were 305 private households in the municipality, and an average of 2.9 persons per household. there were 153 single family homes (or 86.4% of the total) out of a total of 177 inhabited buildings. There were 16 two family buildings (9.0%), 2 three family buildings (1.1%) and 6 multi-family buildings (or 3.4%). There were 160 (or 16.8%) persons who were part of a couple without children, and 557 (or 58.3%) who were part of a couple with children. There were 58 (or 6.1%) people who lived in single parent home, while there are 14 persons who were adult children living with one or both parents, 4 persons who lived in a household made up of relatives, 10 who lived in a household made up of unrelated persons, and 81 who are either institutionalized or live in another type of collective housing. The vacancy rate for the municipality, , was 1.12%. , the construction rate of new housing units was 11 new units per 1000 residents. there were 327 apartments in the municipality. The most common apartment size was the 6 room apartment of which there were 112, and there were 3 single room apartments. In the 2007 federal election the most popular party was the SVP which received 43.22% of the vote. The next three most popular parties were the CVP (21.41%), the FDP (11.13%) and the SP (9.35%). In the federal election, a total of 388 votes were cast, and the voter turnout was 57.7%. The historical population is given in the following table: Heritage sites of national significance Schloss Liebenfels (Liebenfels Castle) is listed as a Swiss heritage site of national significance. The area around Liebenfels is designated as part of the Inventory of Swiss Heritage Sites. Economy , Herdern had an unemployment rate of 1.5%. , there were 107 people employed in the primary economic sector and about 40 businesses involved in this sector. 35 people are employed in the secondary sector and there are 11 businesses in