Foreign place names containing a direction such as South or Upper are often translated, e.g.: North Carolina → Pohjois-Carolina; Upper Volta → Ylä-Volta Estonian and Finnish are quite closely related and share many words that differ only slightly, such as saar (Estonian) and saari (Finnish) for island.
Areas with both Finnish-, and Swedish-speaking inhabitants have endonymic place names in both languages.
Due to changing demographics, some monolingually Swedish areas have historical Finnish names inherited from earlier Finnish-speaking inhabitants.
Northern Sweden has a Finnish/Meänkieli-speaking minority and thus some place names are derived from Finnish, making them not exonyms.
Some Meänkieli names, at least closer to the mountains, were originally Sami, but were modified when picked up into Finnish.