The chart above shows the number of subway riders in each region. The Western is the only region to have more than three billion annual subway riders.
- The difference between the region with the most subway riders, the Western EU, and the region with the least, the Southern US, is 5,170,350,000 riders.
- The Western EU has 60.36 times the subway riders that the Southern US does.
- The New York City Subway (1,727.3 million riders), the Paris Metro (1,518.6 million) and the London Underground (1,378 million) each have more riders than each of the Eastern and Northern EU and each of the Midwestern, Western, and Southern US.
- Data is from 2017 except for the Genoa and Rome Metros which are from 2012, the Nuremberg U-Bahn and Athens and Turin Metros which are from 2015, the French, Polish, Romanian, and United Kingdom subways which are from 2016, and the Catania Metro which is from 2018.
- Hawaii and Greece are currently working on building a subway system for Honolulu and Thessaloniki respectively.
- All figures are rounded to the nearest hundredth.
- The Western EU consists of Germany, United Kingdom, France, Netherlands, Belgium, Austria, Ireland, and Luxembourg.
- The Southern EU consists of Italy, Spain, Portugal, Greece, Cyprus, and Malta.
- The Northeastern US consists of New York, Pennsylvania, New Jersey, Massachusetts, Maryland, Connecticut, New Hampshire, Delaware, Maine, Rhode Island, and Vermont.
- The Eastern EU consists of Poland, Czech Republic, Romania, Hungary, Slovakia, Bulgaria, Croatia, Slovenia, Lithuania, Latvia, and Estonia.
- The Northern EU consists of Sweden, Denmark, and Finland.
- The Midwestern US consists of Illinois, Ohio, Michigan, Indiana, Minnesota, Wisconsin, Missouri, Iowa, Kansas, Nebraska, North Dakota, and South Dakota.
- The Southern US consists of Texas, Florida, Georgia, North Carolina, Virginia, Tennessee, Louisiana, South Carolina, Alabama, Kentucky, Oklahoma, Arkansas, Mississippi, and West Virginia.
- The Western US consists of California, Washington, Colorado, Arizona, Oregon, Utah, Nevada, New Mexico, Hawaii, Idaho, Alaska, Montana, and Wyoming.
The Western EU accounts for over two-fifths of all subway riders in the EU and US at 42.48%. It, with the Southern EU make up nearly two-thirds of the subway riders in the EU and US at 62.65%.
As far as individual subway systems go, the New York City Subway accounts for over one-tenth of all subway riders in the EU and US at 13.95%. It, with the Paris Metro account for just over one-quarter of all the riders in the two superstates at 26.22%.
Wikipedia. 2019. "List of Metro Systems." Accessed February 24, 2019. https://en.wikipedia.org/wiki/List_of_metro_systems.