That’s a Jeopardy question? Bad question. Both Minneapolis and Saint Paul are also on both sides of the Mississippi—contrary to popular belief which assumes that the Twin Cities are separated by the Mississippi. Which they are at some points, but not all.
Saint Paul’s “West Side” is so named because it’s on the “west bank” of the Mississippi River, but it’s actually due south of downtown Saint Paul, and due east of the area of Saint Paul where I live which is firmly ensconced on the “east bank.” The river makes two big bends through the heart of Saint Paul, which accounts for this geographical confusion. And the West Side is not to be confused with the West End which is west of downtown on the east bank; nor with the westernmost portions of the city which are all on the east bank.
Then there are the suburbs of West Saint Paul, located due south of Saint Paul’s West Side but south or southeast of most of the city of Saint Paul’s population and land area. And South Saint Paul which is directly east of West Saint Paul. Confused? Consult a map.