World top — total annual passengers
The world's busiest railway stations, by annual passengers — a points layer.
Wikipedia compilation, "List of busiest railway stations", sourced station by station.
Circle size encodes annual passenger volume.
The world's five busiest stations combine the density of Japan's rail network — Shinjuku, Shibuya and Ikebukuro, all three in Tokyo — with Mumbai's demographic weight, whose Chhatrapati Shivaji Maharaj station ranks second. Shinjuku (1.16 billion passengers a year) owes its record to heavy commuter-rail use rather than sheer size: no Western station makes this ranking.