Irmo is a city located in South Carolina. With a 2020 population of 12,673, it is the 35th largest city in South Carolina and the 2614th largest city in the United States. Irmo is currently growing at a rate of 1.26% annually and its population has increased by 14.20% since the most recent census, which recorded a population of 11,097 in 2010. Spanning over 7 miles, Irmo has a population density of 1,850 people per square mile.
The average household income in Irmo is $77,811 with a poverty rate of 9.35%. The median rental costs in recent years comes to $1,149 per month, and the median house value is $124,900. The median age in Irmo is 38.2 years, 36.6 years for males, and 40.1 years for females. For every 100 females there are 91.6 males.