Zipcar became the first North American car sharing company to go international when it launched Zipcar-Canada in Toronto, Ontario during the summer of 2006. It then launched its first overseas market in November 2006 with the opening of its London operations. With expansion to Vancouver, Zipcar now operates in the neighborhoods of nearly 23 million people.

Zipcar has the largest active membership base of any car sharing service, with more than 90,000 members and 2,500 vehicles.