Buchs is a municipality in the district of Aarau of the canton of Aargau in Switzerland. It is located near the river Suhre and borders with the municipalities of Aarau, Rupperswil and Suhr. The municipality is accessed by the A1 motorway via the Aarau-Ost exit. History Buchs is first mentioned in 1225 as Buhse. In 1361 it was mentioned as Buchs. Coat of arms The blazon of the municipal coat of arms is Argent a Box-tree Vert eradicated issuant from Coupeaux of the same. The coat of arms contains an example of canting, the tree is a box-tree () which refers to the municipal name. Geography The center of the village is located at the river Suhre, which joins the river Aare two kilometers farther north. The older populated areas are the "Oberdorf" west of, and the "Ausserdorf" east of, the river; this is surrounded by the newer areas. The area of Buchs lies in the plains of the Suhre, the eastern part is covered by the "Suretwald" forest. Buchs has an area, , of . Of this area, 13.5% is used for agricultural purposes, while 46.2% is forested. Of the rest of the land, 40.2% is settled (buildings or roads) and the remainder (0.2%) is non-productive (rivers or lakes). The highest elevation, 394 meters, is located at the south-west border in the "Steinfeld" area, the lowest elevation, 371 meters, is located where the Suhre leaves the area of Buchs in the north. Demographics Buchs has a population (as of ) of . , 31.3% of the population was made up of foreign nationals. Over the last 10 years the population has grown at a rate of 3.7%. Most of the population () speaks German (80.3%), with Italian being second most common ( 6.0%) and Serbo-Croatian being third ( 4.3%). Of the rest of the population 2.6% spoke Turkish, 1.2% Spanish, 0.7% Albanian, 0.6% French, 0.5% Portuguese. The age distribution, , in Buchs is; 615 children or 9.4% of the population are between 0 and 9 years old and 716 teenagers or 10.9% are between 10 and 19. Of the adult population, 946 people or 14.5% of the population are between 20 and 29 years old. 976 people or 14.9% are between 30 and 39, 1,020 people or 15.6% are between 40 and 49, and 855 people or 13.1% are between 50 and 59. The senior population distribution is 586