 On 31 December 2009 Amtsbezirk Aarwangen, the municipality's former district, was dissolved.On the following day, 1 January 2010, it joined the newly created Verwaltungskreis Oberaargau.The blazon of the municipal coat of arms is "Gules a Bend wavy Argent over a Mount of 3 Coupeaux Vert."