Iroquois Ridge North was once part of the shoreline of the ancient Lake Iroquois, a glacial lake that retreated south to Lake Ontario following the last ice age some 12000 years ago. This shoreline ran from the Peterborough area all the way to Halton Region. Today, Lake Iroquois remnants can be found in the hilly topography, woodlots and small creeks and valleys found in this neighbourhood. The street names in Iroquois Ridge North provide clues as to what this area would have looked like prior to the residential development that began in the late 1980s. Here are some of those names: Creekwood Trail, Valleybrook Drive, Creekside Drive, Crimson Oak, Pinery Crescent, Clearwater Crescent, Lindenrock Drive, Grandview Drive, Evergreen Crescent and Bluestream Drive just to name a few.

This neighbourhood would have formerly taken its name from the Iroquois Ridge High School which opened in 1994. The Iroquois Ridge Community Centre was opened a few years later in 2001. These two landmarks really helped to create a sense of community and identity for residents and put this neighbourhood on the map.