50 and 59. The senior population distribution is 27 people or 9.7% of the population are between 60 and 69 years old, 19 people or 6.9% are between 70 and 79, there are 12 people or 4.3% who are between 80 and 89. , there were 110 people who were single and never married in the municipality. There were 110 married individuals, 16 widows or widowers and 11 individuals who are divorced. , there were 97 private households in the municipality, and an average of 2.5 persons per household. There were 32 households that consist of only one person and 10 households with five or more people. Out of a total of 98 households that answered this question, 32.7% were households made up of just one person and there was 1 adult who lived with their parents. Of the rest of the households, there are 16 married couples without children, 40 married couples with children There were 5 single parents with a child or children. There were 3 households that were made up of unrelated people and 1 household that was made up of some sort of institution or another collective housing. there were 45 single family homes (or 55.6% of the total) out of a total of 81 inhabited buildings. There were 10 multi-family buildings (12.3%) and along with 26 multi-purpose buildings that were mostly used for housing (32.1%). , a total of 95 apartments (93.1% of the total) were permanently occupied, while 4 apartments (3.9%) were seasonally occupied and 3 apartments (2.9%) were empty. , the construction rate of new housing units was 3.6 new units per 1000 residents. The vacancy rate for the municipality, , was 3.33%. The historical population is given in the following chart: Politics In the 2007 federal election the most popular party was the SVP which received 43.39% of the vote. The next three most popular parties were the FDP (15.52%), the SP (11.76%) and the Green Party (10.7%). In the federal election, a total of 87 votes were cast, and the voter turnout was 45.8%. Economy , Belmont-sur-Yverdon had an unemployment rate of 3.7%. , there were 34 people employed in the primary economic sector and about 16 businesses involved in this sector. 5 people were employed in the secondary sector and there were 5 businesses in this sector. 8 people were employed in the tertiary sector, with 5 businesses in this