PCDHFC
Located in Port Coquitlam, PCDHFC is one of the largest shooting clubs in the Lower Mainland. While it hosts a number of disciplines, they also hold several IPSC matches every year, and have recently hosted National as well as Provincial Championships
http://www.pcdhfc.com

TMSA
TMSA regularly holds IPSC style competitions of varying levels, ranging from the Club Level I matches to Qualifiers (Level II and III). They have hosted several Provincial Championships as well. Visitors are welcome at all levels of competition. http://www.tmsa.net

Prince George Rod and Gun Club
http://www.pgrgclub.ca/

Other organizations in Canada can direct you to their own clubs.