Oberentfelden

Oberentfelden is a municipality in the district of Aarau of the canton of Aargau in Switzerland. Oberentfelden is first mentioned in 965 as Endiveld. In 1306 it was mentioned as Oberen-En[t]velt. Oberentfelden has an area, as of 2006, of 7.2 km (2.8 sq mi). Of this area, 29.4% is used for agricultural purposes, while 42.3% is forested. Of the rest of the land, 28% is settled (buildings or roads) and the remainder (0.3%) is non-productive (rivers or lakes). The municipality is located in the Aarau district in the lower Suhr valley. The villages of Oberentfelden and Unterentfelden, while distinct municipalities, have grown together. The blazon of the municipal coat of arms is Gules on Base wavy per fess wavy of six Azure and Argent a Duck issuant and in chief two Mullets Or. Because of the original name Endiveld, which sounded like Entenfeld (duck field), the duck made it into the blazon.