Tesla Supercharger #100 in Hamilton Township, New Jersey
Tesla Superchargers are spreading like mushrooms according to the latest video that presents the progress.
Just about two years ago, there was opening of 100th Supercharger station and now Tesla lists 585 sites:
585 Supercharger stations with 3,397 Superchargers
The unofficial supercharge.info notes even several more stations ready. In the U.S., the Supercharger count stands at nearly 250 and China is second with nearly 100.
Each of the stations have multiple charging spots (from to 2 to over 10) and there is around 120 kW or sometimes 135 kW available for each two spots (shared between them).
Tesla Superchargers in Europe - early January 2016
Tesla Superchargers in Asia-Pacific - early January 2016