Wikipedia (https://en.wikipedia.org/wiki/Transport_in_Greater_Tokyo#Rail https://en.wikipedia.org/wiki/Transport_in_Greater_Tokyo#Rai...) says "There are 882 in

Wikipedia (https://en.wikipedia.org/wiki/Transport_in_Greater_Tokyo#Rail https://en.wikipedia.org/wiki/Transport_in_Greater_Tokyo#Rai...) says "There are 882 interconnected rail stations in the Tokyo Metropolis, 282 of which are Subway stations, with several hundred more in each of the 3 surrounding densely populated suburban prefectures. There are 30 operators running 121 passenger rail lines (102 serving Tokyo and 19 more serving Greater Tokyo but not Tokyo's city center itself), excluding about 12 cable cars." I could probably believe the 2,100 number if you include all the surrounding prefectures that are in the broader Tokyo area, and if you count stations multiple times for each railway operator services them (it's not uncommon for a single station in Tokyo to be run by three or five different companies).