Doetinchem is a city and municipality in the east of the Netherlands. It is situated along the Oude IJssel (Old IJssel) river in a part of the province of Gelderland called the Achterhoek . The municipality has 56,275 inhabitants (January 1, 2012) and has an area of 79.67 km² (of which 0.57 km² is water). This makes Doetinchem the largest town (by population) in the Achterhoek. On 1 January 2005, a municipal reorganization merged the neighbouring municipality of Wehl into Doetinchem.