This was the last Canadian banknote series to include "planchettes" as a security feature. Les Planchettes has a population () of . Les Planchettes has an area, , of . The primary school in Les Planchettes is combined with La Chaux-de-Fonds. The primary school in La Chaux-de-Fonds is combined with Les Planchettes. In 1867, the British publication Once a Week published a sensational piece on planchettes. Les Planchettes is first mentioned in 1455 as "Les Planchotes". Planchettes took on a variety of forms during the height of their popularity.