with 1 or 2 persons in the household, 329 homes with 3 or 4 persons in the household, and 204 homes with 5 or more persons in the household. , there were 607 private households (homes and apartments) in the municipality, and an average of 2.6 persons per household. there were 264 single family homes (or 39.5% of the total) out of a total of 669 homes and apartments. There were a total of 9 empty apartments for a 1.3% vacancy rate. , the construction rate of new housing units was 2.6 new units per 1000 residents. In the 2007 federal election the most popular party was the SVP which received 44.84% of the vote. The next three most popular parties were the SP (21.39%), the CVP (15.01%) and the FDP (8.83%). In the federal election, a total of 386 votes were cast, and the voter turnout was 44.7%. The historical population is given in the following table: Heritage sites of national significance The Koblenz Aar railway bridge (shared with Leuggern), the Koblenz–Waldshut Rhine railway bridge and the Kleiner Laufen, a watchtower remnant of the Roman Rhine border fortifications are listed as Swiss heritage sites of national significance. Economy , Koblenz had an unemployment rate of 2.57%. , there were 16 people employed in the primary economic sector and about 5 businesses involved in this sector. 367 people are employed in the secondary sector and there are 23 businesses in this sector. 230 people are employed in the tertiary sector, with 47 businesses in this sector. there were 821 workers who lived in the municipality. Of these, 624 or about 76.0% of the residents worked outside Koblenz while 369 people commuted into the municipality for work. There were a total of 566 jobs (of at least 6 hours per week) in the municipality. Of the working population, 14.9% used public transportation to get to work, and 51% used a private car. Religion From the , 720 or 44.7% were Roman Catholic, while 446 or 27.7% belonged to the Swiss Reformed Church. Of the rest of the population, there were 7 individuals (or about 0.43% of the population) who belonged to the Christian Catholic faith. Education The entire Swiss population is generally well educated. In Koblenz about 63.6% of the population (between age 25–64) have completed either non-mandatory upper secondary education or additional higher education (either university or a Fachhochschule). Of