Delligsen is a municipality in Holzminden district, in Lower Saxony, Germany.It consists of six localities which were independent until 1974: Delligsen itself, Grünenplan, Ammensen, Hohenbüchen, Kaierde and Varrigsen. The area is dominated by the massif of the Hils hillsDelligsen itself has been an industrial settlement dominated by the Friedrich-Carls-Hütte ironworks which closed down in 1984.Grünenplan further up in the Hils is an officially designated climate health resort.