Gilbert is a city in St. Louis County, Minnesota, United States. The population was 1,687 at the 2020 census. State Highway 37 and Stat…Gilbert is a city in St. Louis County, Minnesota, United States. The population was 1,687 at the 2020 census. State Highway 37 and State Highway 135 are two of the main routes in Gilbert. Gilbert is part of the Quad Cities, with Virginia, Eveleth, and Mountain Iron. The city is named for either Giles Gilbert, who led the exploration of the McKinley mine property in the 1890s, or E. A. Gilbert, a Duluth businessman.
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