When transportation historians write about bikesharing in the US, they will look back on 2010 as a watershed year. After years of pilot programs and other incremental steps, it was in 2010 that real large-scale bikesharing finally appeared in the US, first in Denver, and later in Minneapolis and Washington.

To commemorate the big year, here is a list of all existing US bikesharing systems, ranked by size (according to the excellent Bike-Sharing Blog).

5UC – Irvine404
6WSU – Pullman324
7Des Moines184

The coming years promise to take bikesharing to even greater heights. Several of the existing systems will expand, and large new networks will soon launch in Miami, New York, Boston, and a host of other important cities.