This county was set off in 1885 from Marquette and Menominee counties. Iron ore deposits which gave the new county its name were the first in the Menominee Iron Range to be discovered. Shipping of ore began in 1882 when the railroad came in. Iron River was the first county seat but in 1899 after a celebrated struggle the government was shifted to Crystal Falls. Logging which began in 1875, has been second only to mining in Iron County's economy.