Before the merger, Sternenberg had a total area of. Of this area, 37.9% is used for agricultural purposes, while 58% is forested. Of the rest of the land, 3.8% is settled and the remainder is non-productive. housing and buildings made up 2.3% of the total area, while transportation infrastructure made up the rest. Of the total unproductive area, water made up 0% of the area. 0.9% of the total municipal area was undergoing some type of construction.
Demographics
Sternenberg had a population of 351. , 4.0% of the population was made up of foreign nationals. the gender distribution of the population was 51.3% male and 48.7% female. Over the last 10 years the population has decreased at a rate of -1.4%. Most of the population speaks German , with French being second most common and English being third. In the 2007 election the most popular party was the SVP which received 43.4% of the vote. The next three most popular parties were the SPS, the CSP and the Green Party. The age distribution of the population is children and teenagers make up 24.6% of the population, while adults make up 58.2% and seniors make up 17.2%. In Sternenberg about 76.5% of the population have completed either non-mandatory upper secondary education or additional higher education. There are 140 households in Sternenberg. Sternenberg has an unemployment rate of 1.8%. , there were 48 people employed in the primary economic sector and about 22 businesses involved in this sector. 33 people are employed in the secondary sector and there are 9 businesses in this sector. 46 people are employed in the tertiary sector, with 11 businesses in this sector. 41% of the working population were employed full-time, and 59% were employed part-time. there were 59 Catholics and 206 Protestants in Sternenberg. In the 2000 census, religion was broken down into several smaller categories. From the, 65.6% were some type of Protestant, with 62.2% belonging to the Swiss Reformed Church and 3.4% belonging to other Protestant churches. 13.5% of the population were Catholic. Of the rest of the population, 0% were Muslim, 2% belonged to another religion, 2.6% did not give a religion, and 16% were atheist or agnostic.
