Iron Mountain Lake is a city in St. Francois County, Missouri, United States. As of the 2020 census, Iron Mountain Lake had a population of 640.
Geography
According to the United States Census Bureau, the city has a total area of , of which is land and is water.
Demographics
2010 census
As of the census of 2010, there were 737 people, 295 households, and 200 families living in the city. The population density was . There were 367 housing units at an average density of . The racial makeup of the city was 96.20% White, 2.17% Native American, 0.14% Asian, 0.14% from other races, and 1.36% from two or more races. Hispanic or Latino of any race were 1.90% of the population.
There were 295 households, of which 29.2% had children under the age of 18 living with them, 45.8% were married couples living together, 13.6% had a female householder with no husband present, 8.5% had a male householder with no wife present, and 32.2% were non-families. 25.8% of all households were made up of individuals, and 11.2% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 2.95.
The median age in the city was 41.8 years. 22.7% of residents were under the age of 18; 7.7% were between the ages of 18 and 24; 24% were from 25 to 44; 29.9% were from 45 to 64; and 15.6% were 65 years of age or older. The gender makeup of the city was 48.8% male and 51.2% female.
2000 census
As of the census