Iron Junction is a city in Saint Louis County, Minnesota, United States. The population was 110 at the 2020 census. Saint Louis County Highway 7 and Iron Junction Road serve as main routes in the community. State Highway 37 is nearby. The name Iron Junction, as a place of residence, is seldom used today by its residents. Those who reside in this community simply identify themselves as a resident of Iron. The road signs posted in the community also simply read "Iron".