land. During the same year, housing and buildings made up 1.4% and transportation infrastructure made up 1.4%. Out of the forested land, 45.6% of the total land area is heavily forested and 5.0% is covered with orchards or small clusters of trees. Of the agricultural land, 5.5% is used for growing crops and 23.4% is pastures and 16.1% is used for alpine pastures. All the water in the municipality is flowing water. The former municipality is located in the hills near the source of the Sorne river. On 31 December 2009 District de Moutier, the 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 Gules a Chevron Or in chief three Mullets of the same one and two and a Base wavy Azure. Demographics Sornetan had a population (as of 2013) of 139. , 4.0% of the population are resident foreign nationals. Over the last 10 years (2001-2011) the population has changed at a rate of 2.4%. Migration accounted for 0.8%, while births and deaths accounted for 0%. Most of the population () speaks French (99 or 87.6%) as their first language, German is the second most common (11 or 9.7%) and Spanish is the third (1 or 0.9%). , the population was 53.2% male and 46.8% female. The population was made up of 65 Swiss men (51.6% of the population) and 2 (1.6%) non-Swiss men. There were 56 Swiss women (44.4%) and 3 (2.4%) non-Swiss women. Of the population in the municipality, 53 or about 46.9% were born in Sornetan and lived there in 2000. There were 31 or 27.4% who were born in the same canton, while 19 or 16.8% were born somewhere else in Switzerland, and 9 or 8.0% were born outside of Switzerland. , children and teenagers (0–19 years old) make up 23.3% of the population, while adults (20–64 years old) make up 67.4% and seniors (over 64 years old) make up 9.3%. , there were 51 people who were single and never married in the municipality. There were 55 married individuals, 5 widows or widowers and 2 individuals who are divorced. , there were 11 households that consist of only one person and households with five or more people. , a total of 36 apartments (65.5% of the total) were permanently