That is interesting information. If you read the last part of this article http://www.aei.org/article/102817 it references that specific georgraphy along with the fact that it remains the are most heavily settle by American of Finnish descent.
23 posted on 12/06/2010 10:28:12 AM PST by MSF BU
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Finnish Americans in the UP are concentrated primarily in the northern central and northwestern counties, starting from Marquette County westward along the southern shore of Lake Superior. As one moves west, the proportion of Finnish Americans increases such that in Marquette County 22.1 percent are Finnish Americans, in Baraga County it is 34.6 percent, and in Keweenaw county it increases to 49.9 percent. Source