The origin of the name Delson comes from the
Delaware and Hudson Railway, now a subsidiary of the
Canadian Pacific Railway, which runs through the town. The
Canadian Railway Museum (Exporail) occupies a large tract between Delson and
Saint-Constant. Delson was founded in 1918 as a
village municipality before obtaining its status of a city 21 February 1957. The village of Delson was created from three parishes: St Andrews (1924) of the
United Church and St David (1938) of the
Anglican church, as well as Sainte-Thérèse-de-l'Enfant-Jésus (1932) of the
Catholic faith. == Geography ==