Duluth was a city on Earth, located in the US state of Minnesota in North America.
During the early 22nd century, MACO Sergeant N. Kemper lived in Duluth as a child until junior high school. According to linguist Hoshi Sato, his inflections gave his origins away. (ENT: "The Xindi")
Upon logging a cadet leaving for Duluth to spend the All-Worlds Day break in 3196, Commander Jett Reno jokingly asked if she could talk her out of it. (SA: "Ko'Zeine")