Estimated number of Citi Bike bikes
Docked (available right now) and in circulation (estimated total fleet minus what is docked). The method is explained on the About page.
18677
1192
15037
5015
Estimated total fleet: 19869 mechanical bikes, 20052 e-bikes (highest count ever observed).
Today, bikes in circulation (per hour)
The total fleet does not change within a day: only the split between docked and in circulation moves. This chart keeps the estimated fleet fixed and only varies the share in circulation.