Irmo is located in South Carolina. Irmo, South Carolina has a population of 12,341. Irmo is less family-centric than the surrounding county with 27% households with children. The county percentage for households with children is 28%.
The median household income in Irmo, South Carolina is $68,865. The median household income for the surrounding county is $57,289 compared to the national median of $66,222. The median age of people living in Irmo is 39.5 years.
The average high temperature in July is 92.1 degrees, with an average low temperature in January of 34 degrees. The annual precipitation is 48.27.