Ironton is a city in Iron County, Missouri, United States. The population was 1,460 at the 2010 census. It is the county seat of Iron County, and is located 12 miles south of Belgrade.
Ironton was designated county seat in 1857, soon after the formation of Iron County. Like the county, Ironton was named from the deposits of iron ore found in the vicinity. A post office called Ironton has been in operation since 1858.
In early August 1861, Brigader General Sam Grant led a force of four regiments in the area. In a letter to his wife he described the area as “one of the most delightful places I have ever been in.”
Ironton is located at 37°36′2″N 90°37′54″W (37.600455, -90.631627). According to the United States Census Bureau, the city has a total area of 1.39 square miles (3.60 km2), of which 1.34 square miles (3.47 km2) is land and 0.05 square miles (0.13 km2) is water.
As of the census of 2010, there were 1,460 people, 639 households, and 375 families living in the city. The population density was 1,089.6 inhabitants per square mile (420.7/km2). There were 745 housing units at an average density of 556.0 per square mile (214.7/km2).