Irmo town, South Carolina
Official LSAD Designation: Irmo town • Census GEOID: 4535890
• Lexington County / Richland County
Demographics & Population Profile
Population and demographics for Irmo town.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 12,204 | — | 2025 | Census |
| Median Age | 40.3 yrs | ±2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 4,632 | ±288 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).