Priconomics researcher Rohin Dhar looked at six months of Craigslist data to find the top cities for cycling in the United States. She titled the blog post The Fixie Bike Index
She counted the number of bicycle for sale posts nationwide and found that San Francisco, Los Angeles and Chicago had the most bike listings. With the population density of these cities this isn’t surprising. She then looked at the data per capita and came up with these rankings.

This is just a portion of what she analyzed and some of the data is very interesting. For the complete article go here
I first saw this article on Cyclelicious
No surprises here
I'm not surprised that the cities with the most bike sales per capital are in Colorado and Oregon. I'm a little surprised by Reno, but overall this makes sense.