Irmo, South Carolina Demographics & Population 2026
During the 2020–2024 ACS period, Irmo, South Carolina had a total population of 11,813, the 55th largest town in South Carolina, with a median household income of $80,489, which is 16% higher than the state average. The poverty rate is 9.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Unemployment rate of 8.4% is notably above the national average.
Irmo Quick Facts
How Irmo Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 11,799 | 11,813 | +0.1% |
| Median household income | $85,137 | $80,489 | -5.5% |
| Median home value | $193,100 | $203,400 | +5.3% |
How Irmo Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 55 | National average: 61
Education
Educational Attainment (Adults 25+)
Irmo Rankings in South Carolina
Explore South Carolina Rankings
Other Cities in Richland County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Columbia | 139,643 | $55,529 | 24.0% | $264,300 |
| St. Andrews | 19,868 | $46,511 | 25.4% | $161,300 |
| Dentsville | 15,209 | $45,473 | 15.7% | $163,700 |
| Cayce | 13,741 | $62,045 | 13.7% | $166,800 |
| Forest Acres | 10,530 | $78,306 | 8.2% | $279,300 |
| Woodfield | 9,465 | $45,526 | 19.8% | $150,800 |
| Lake Murray of Richland | 7,023 | $119,107 | 2.0% | $422,100 |
| Blythewood | 5,731 | $94,167 | 4.8% | $384,600 |
| Capitol View | 4,374 | $46,645 | 10.6% | $187,600 |
| Arthurtown | 3,272 | $21,046 | 63.2% | $120,100 |
Cities Similar to Irmo
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Fountain Inn | 12,020 | $73,585 | $275,300 | 33.5% | 7.7% |
| Oak Grove | 12,256 | $74,554 | $210,300 | 32.6% | 12.6% |
| Hardeeville | 10,871 | $78,365 | $488,900 | 42.6% | 11.8% |
| Little River | 11,771 | $65,786 | $305,800 | 25.8% | 12.7% |
| Powdersville | 10,771 | $84,910 | $334,900 | 36.5% | 9.3% |
Population Overview
Irmo is a small city located in South Carolina, within Richland County. The total population is 11,813. It ranks as the 55th most populous out of 474 Census-designated places in South Carolina.
Age Demographics
The median age in Irmo is 40.3 years. This is about the same as the state median of 40.2 years.
Economy, Income & Housing
The median household income in Irmo is $80,489. This is 16% higher than the state median of $69,324. It is also about the same as the national median of $80,734. The poverty rate stands at 9.2%. This is 35% lower than the state poverty rate of 14.1%. The unemployment rate is 8.4%. This is 73% higher than the state rate of 4.9%. The median home value is $203,400. Housing costs are 21% lower than the state median of $259,000. With a home-value-to-income ratio of just 2.5x, Irmo is one of the most affordable housing markets in the area. 81.6% of occupied housing units are owner-occupied. This homeownership rate is 14% higher than the state average of 71.9%.
Race & Ethnicity
The largest racial or ethnic group in Irmo is White (non-Hispanic), making up 58.1% of the population. Black or African American residents account for 27.4%. The Asian population is significantly higher than the state average (4.3% vs 1.8%).
Education
39.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 22% higher than the state rate of 32.1%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.8%.
Data Sources & Methodology
All demographic data for Irmo, South Carolina is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against South Carolina state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 474 Census-designated places in South Carolina. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all South Carolina city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Irmo, South Carolina?
Irmo, South Carolina has a population of 11,813 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Irmo, SC?
The median household income in Irmo is $80,489, which is about the same as the national median of $80,734.
What is the poverty rate in Irmo, SC?
The poverty rate in Irmo is 9.2%. This means approximately 1,080 residents live below the federal poverty line.
What is the racial makeup of Irmo, South Carolina?
Irmo's population is 58.1% White, 27.4% Black, 5.7% Hispanic/Latino, and 4.3% Asian.
What is the median home value in Irmo, SC?
The median home value in Irmo is $203,400. The home-value-to-income ratio is 2.5x.
How educated is Irmo, South Carolina?
39.2% of adults (25+) in Irmo hold a bachelor's degree or higher, and 11.5% hold a graduate or professional degree.