Mankato Township was not settled by European Americans until Parsons King Johnson in February 1852, as part of the nineteenth century migration of people from the east across the Midwest. New residents organized the city of Mankato on May 11, 1858. The city was organized by Henry Jackson.
A popular story says that the city was intended to have been named Mahkato, but a typographical error by a clerk established the name as Mankato.