The Twin Cities
Why are St. Paul and Minneapolis called "Twin Cities"?
The term was first applied to two settlements on either side of the Mississippi River-St. Anthony's Falls on the east and Minneapolis on the west-in the 1840s.
The two towns were later linked by a suspension bridge. Minneapolis was chartered as a city in 1867 and in 1872 it and St. Anthony's Falls were united to form one city. As a result, nearby St. Paul assumed the nickname while it and the new Minneapolis grew during the 20th century to become Minnesota's two biggest cities.
-The Fact Monster