Densbüren is a municipality in the Aarau District of the canton of Aargau in Switzerland. History Densbüren is first mentioned in the 14th century as Tensbuirron. In 1426, it was mentioned as Teinspuiren. Geography Densbüren has an area, , of . Of this area, 39.2% is used for agricultural purposes, while 55.7% is forested. Of the rest of the land, 4.8% is settled (buildings or roads) and the remainder (0.2%) is non-productive (rivers or lakes). The municipality is located in the Aarau District on the northern slope of the Staffelegg Pass, a regionally important pass over the Jura Mountains. It consists of the linear village of Densbüren and the hamlets of Asp. Coat of arms The blazon of the municipal coat of arms is Argent bordered Gules a Pine Tree Vert issuant from Coupeaux of the same. Demographics Densbüren has a population (as of ) of . , 7.7% of the population was made up of foreign nationals. Over the last 10 years, the population has decreased at a rate of -4.9%. Most of the population () speaks German (98.2%), with Albanian being second most common (0.4%) and Serbo-Croatian being third (0.3%). The age distribution, , in Densbüren is; , there were 25 homes with 1 or 2 persons in the household, 98 homes with 3 or 4 persons in the household, and 135 homes with 5 or more persons in the household. The average number of people per household was 2.62 individuals. there were 151 single family homes (or 49.8% of the total) out of a total of 303 homes and apartments. In the 2007 federal election the most popular party was the Swiss People's Party which received 52.4% of the vote. The next three most popular parties were the Free Democratic Party (10.5%), the Social Democratic Party (10.3%) and the Christian Democratic People's Party (8%). In Densbüren about 77.1% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either university or a Fachhochschule). Of the school age population (), there are 44 students attending primary school in the municipality. The historical population is given in the following table: Heritage sites of national significance The ruined castle of Urgiz Castle is listed as a Swiss heritage site of national significance. Economy , Densbüren had an unemployment rate of 1.42%. , there were 81 people employed in the primary economic sector and