municipality's former district, was dissolved. On the following day, 1 January 2010, it joined the newly created Arrondissement administratif Jura bernois. Coat of arms The blazon of the municipal coat of arms is Argent two Ears Gules slipped and leaved Vert issuant from a Mount of 3 Coupeaux of the last and in chief between those a Mullet of the second. Demographics Sorvilier has a population () of . , 8.0% of the population are resident foreign nationals. Over the last 10 years (2001-2011) the population has changed at a rate of 1.1%. Migration accounted for 0.4%, while births and deaths accounted for 0.4%. Most of the population () speaks French (246 or 90.4%) as their first language, German is the second most common (19 or 7.0%) and Albanian is the third (3 or 1.1%). There is 1 person who speaks Italian. , the population was 51.7% male and 48.3% female. The population was made up of 123 Swiss men (46.8% of the population) and 13 (4.9%) non-Swiss men. There were 119 Swiss women (45.2%) and 8 (3.0%) non-Swiss women. Of the population in the municipality, 95 or about 34.9% were born in Sorvilier and lived there in 2000. There were 103 or 37.9% who were born in the same canton, while 34 or 12.5% were born somewhere else in Switzerland, and 27 or 9.9% were born outside of Switzerland. , children and teenagers (0–19 years old) make up 19.9% of the population, while adults (20–64 years old) make up 60.9% and seniors (over 64 years old) make up 19.2%. , there were 105 people who were single and never married in the municipality. There were 136 married individuals, 17 widows or widowers and 14 individuals who are divorced. , there were 36 households that consist of only one person and 1 households with five or more people. , a total of 107 apartments (79.9% of the total) were permanently occupied, while 14 apartments (10.4%) were seasonally occupied and 13 apartments (9.7%) were empty. The vacancy rate for the municipality, , was 0.6%. In 2011, single family homes made up 45.4% of the total housing in the municipality. The historical population is given in the following chart: Politics In the 2011 federal election the most popular party was the Swiss People's Party (SVP) which received 30.9% of the vote. The next three most popular parties were the Social Democratic Party