Below is a list of Irmo SC zip codes. For your research we have also included Irmo Area Code, Time Zone, UTC and the local Richland County FIPS Code. Each Irmo South Carolina zip code has a center Longitude / Latitude point (the Irmo center is -81.184303283691 / 34.087299346924). For your convenience we have also indicated if that zip code in Irmo observes Daylight Savings time.