It belongs to the territory of the municipality of Saint-Jean-sur-Richelieu, in the Saint-Luc sector, in the Le Haut-Richelieu Regional County Municipality, in the region administrative Montérégie, in the south of province of Quebec, in Canada.

The development of the Chambly Canal required the construction of a jetty in order to cut this channel at the height of the northwest part of the island.

The rue Sainte-Thérèse which passes on this pier stretches for 0.8 kilometres (0.50 mi) to the north to join the bridge leading to Île Sainte-Marie located downstream.

Île Sainte-Thérèse takes its name from that of Fort Sainte Thérèse, built in 1665 and now disappeared.

The toponym "Île Sainte-Thérèse" was formalized on December 5, 1968 at the Place Names Bank of the Commission de toponymie du Québec.