Prince Rupert is a port city in the province of British Columbia, Canada. Its location is on Kaien Island near the Alaskan panhandle. It is the land…Prince Rupert is a port city in the province of British Columbia, Canada. Its location is on Kaien Island near the Alaskan panhandle. It is the land, air, and water transportation hub of British Columbia's North Coast, and has a population of 12,220 people as of 2016.