Canton of Sains-en-Gohelle  The canton of Sains-en-Gohelle is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. The canton is organised around Sains-en-Gohelle in the arrondissement of Lens. The altitude varies from 39 m (Sains-en-Gohelle) to 192 m (Bouvigny-Boyeffles) for an average altitude of 102m. The canton comprised six communes and a total of 20,036 inhabitants (census of 1999, without double counting).