The seigniory extended from the Charles River[2] northward, encompassing the modern boroughs of Limoilou and Charlesbourg.

The homes of the settlers located on the periphery of the Trait Carré and their trapezoidal plots of land form a star shape.

Charlesbourg is, first and foremost, an agricultural area, in addition to becoming a vacation destination for inhabitants of Quebec City in the first half of the 20th century.

[3] Charlesbourg's earlier name was Bourg Royal, but it was changed in honour of Charles Borromeo, its patron saint.

[5] The territory of the borough is divided in six quarters, only two of which have official names: Notre-Dame-des-Laurentides and Des Jésuites.

The "Les Galeries Charlebourg" shopping center and Loblaws supermarket were built on the site of an important fur trading post.