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 on a Bend wavy Azure a Trout of the first. The trout symbolizes the numerous fish of the nearby Suze river. Demographics Cortébert has a population () of . , 10.8% of the population are resident foreign nationals. Over the last 10 years (2000-2010) the population has changed at a rate of -2.9%. Migration accounted for -4.8%, while births and deaths accounted for 2.6%. Most of the population () speaks French (527 or 73.8%) as their first language, German is the second most common (133 or 18.6%) and Italian is the third (23 or 3.2%). There is 1 person who speaks Romansh. , the population was 51.8% male and 48.2% female. The population was made up of 322 Swiss men (45.8% of the population) and 42 (6.0%) non-Swiss men. There were 305 Swiss women (43.4%) and 34 (4.8%) non-Swiss women. Of the population in the municipality, 206 or about 28.9% were born in Cortébert and lived there in 2000. There were 228 or 31.9% who were born in the same canton, while 124 or 17.4% were born somewhere else in Switzerland, and 125 or 17.5% were born outside of Switzerland. , children and teenagers (0–19 years old) make up 22.2% of the population, while adults (20–64 years old) make up 60.7% and seniors (over 64 years old) make up 17.1%. , there were 299 people who were single and never married in the municipality. There were 336 married individuals, 39 widows or widowers and 40 individuals who are divorced. , there were 87 households that consist of only one person and 25 households with five or more people. , a total of 286 apartments (84.4% of the total) were permanently occupied, while 31 apartments (9.1%) were seasonally occupied and 22 apartments (6.5%) were empty. The vacancy rate for the municipality, , was 4.14%. The historical population is given in the following chart: Sights The entire village of Cortébert is designated as part of the Inventory of Swiss Heritage Sites. Politics In the 2011 federal election the most popular party was the Swiss People's Party (SVP) which received 35.2% of the vote. The next three most popular parties were the Social Democratic Party (SP) (23.3%), the Green Party (10.8%) and the FDP.The Liberals (7.9%). In the