Irondale was originally known as Pottsdale, for Samuel Potts, who started a salt operation at Yellow Creekcirca 1806. Coal mining began at the settlement in 1861, and a blast furnace was built giving the town its new name, Irondale.
As of the census of 2010, there were 387 people, 142 households, and 104 families living in the village. The population density was. There were 165 housing units at an average density of. The racial makeup of the village was 99.7% White and 0.3% African American. There were 142 households, of which 37.3% had children under the age of 18 living with them, 51.4% were married couplesliving together, 14.8% had a female householder with no husband present, 7.0% had a male householder with no wife present, and 26.8% were non-families. 23.2% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.19. The median age in the village was 36.1 years. 28.4% of residents were under the age of 18; 7.1% were between the ages of 18 and 24; 26.1% were from 25 to 44; 26.9% were from 45 to 64; and 11.6% were 65 years of age or older. The gender makeup of the village was 53.0% male and 47.0% female.
2000 census
As of the census of 2000, there were 418 people, 154 households, and 111 families living in the village. The population density was 298.5 people per square mile. There were 167 housing units at an average density of 119.2 per square mile. The racial makeup of the village was 95.69% White, 2.87% African American, 0.48% Native American, 0.24% Asian, 0.24% from other races, and 0.48% from two or more races. Hispanic or Latino of any race were 1.20% of the population. There were 154 households, out of which 39.0% had children under the age of 18 living with them, 55.8% were married couples living together, 9.7% had a female householder with no husband present, and 27.9% were non-families. 24.7% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.24. In the village, the population was spread out, with 28.9% under the age of 18, 9.6% from 18 to 24, 28.9% from 25 to 44, 17.7% from 45 to 64, and 14.8% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 104.9 males. For every 100 females age 18 and over, there were 99.3 males. The median income for a household in the village was $27,344, and the median income for a family was $30,469. Males had a median income of $25,417 versus $26,250 for females. The per capita income for the village was $12,147. About 16.2% of families and 20.5% of the population were below the poverty line, including 26.5% of those under age 18 and 8.7% of those age 65 or over.
