As of 2009 there are 650,000+ motorcycles registered in California.
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In the year of 2009, there were over 595,000 registered motorcycles in Ontario, Canada. If you want to drive a motorcycle in Ontario, they must be registered.
The NHTSA reports over 7 million registered motorcycles in 2007 in the USA. http://www-nrd.nhtsa.dot.gov/pubs/811159.pdf
there are about 355,000 motorcycles regesterd in the state of texas
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There are more than 655,000 licensed motorcyclists and more than 340,000 registered motorcycles on New York's roads. Gearedbike UK
According to the US Deparment of Transportation, there are over 4 million motorcycles registered in the US.
As of 2008, 17,304,091 people were registered to vote in CA.
As of 2018, there were approximately 13.5 million motorcycles registered in the United States. This number includes both street-legal motorcycles and off-road motorcycles.
As of 2012, the state of Minnesota had 2,148,272 registered cars, and 241,768 registered motorcycles. The state also had 12,657 registered buses and close to 2,700.000 trucks.
On 12/31/08 there were: 379,898 cars registered in San Francisco County 61,755 trucks registered in San Francisco County 20,144 motorcycles registered in San Francisco County 8,536 trailers registered in San Francisco County 470,333 Total number of vehicles registered This number is increased by approximately 35,000 vehicles during the day