Schönenberg has an area of. Of this area, 77.1% is used for agricultural purposes, while 11.3% is forested. Of the rest of the land, 9.2% is settled and the remainder is non-productive. housing and buildings made up 7% of the total area, while transportation infrastructure made up the rest. Of the total unproductive area, water made up 1.3% of the area. 3.2% of the total municipal area was undergoing some type of construction. Teufenbachweiher is a reservoir on the Teufenbach creek.
Demographics
Schönenberg has a population of. , 8.9% of the population was made up of foreign nationals. the gender distribution of the population was 49.6% male and 50.4% female. Over the last 10 years the population has grown at a rate of 11.6%. 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 49.8% of the vote. The next three most popular parties were the FDP, the SPS and the CSP. The age distribution of the population is children and teenagers make up 26.1% of the population, while adults make up 60.3% and seniors make up 13.7%. In Schönenberg about 81% of the population have completed either non-mandatory upper secondary education or additional higher education. There are 670 households in Schönenberg. Schönenberg has an unemployment rate of 1.05%. , there were 167 people employed in the primary economic sector and about 58 businesses involved in this sector. 103 people are employed in the secondary sector and there are 19 businesses in this sector. 232 people are employed in the tertiary sector, with 58 businesses in this sector. 37.2% of the working population were employed full-time, and 62.8% were employed part-time. there were 595 Catholics and 975 Protestants in Schönenberg. In the 2000 census, religion was broken down into several smaller categories. From the, 57.1% were some type of Protestant, with 54.5% belonging to the Swiss Reformed Church and 2.6% belonging to other Protestant churches. 30.7% of the population were Catholic. Of the rest of the population, 0% were Muslim, 1.4% belonged to another religion, 1.8% did not give a religion, and 8.8% were atheist or agnostic.