[2] It was named for the valuable iron ore found within its borders.

[3][4] The county overlaps with small parts of the Bad River and Lac du Flambeau Indian reservations.

As of the 2010 United States Census, there were 5,916 people living in the county.

22.9% were of German, 13.7% Italian, 12.6% Finnish, 8.2% Polish, 6.6% American and 5.4% Irish ancestry.

32.00% of all households were made up of individuals, and 16.30% had someone living alone who was 65 years of age or older.

[14] Additionally, there were no reported induced abortions performed on women of Iron County residence in 2017.

[15] The National Register of Historic Places lists the following historic sites in Iron County:[16][17][18][19][20] From 1928 to 1996, Iron County voted Democratic in presidential elections, the only exception being Richard Nixon's landslide in 1972.