Irmo, South Carolina Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Irmo, South Carolina is 11,799 as of the 2023 American Community Survey, making it the 53rd-largest city in South Carolina. The median household income is $85,137, the median home value is $193,100, and the median age is 39.5.
The population has grown 8.2% since 2010 (11,166 → 12,086).
11,799
Population
1728
People / sq mi
$85,137
Median Income
$193,100
Median Home Value
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Irmo covers 6.8 sq mi of land at 1728 people per square mile.
About Irmo, SC
Homeownership is the standout figure in Irmo: 80.7% of homes are owner-occupied, higher than the national rate. With 11,799 residents, Irmo is a city in South Carolina.
Median household income is $85,137, above the US median of $78,538. The poverty rate is 6.1%, below the national 12.4%. Housing is relatively affordable, with a median home value of $193,100, with typical rent around $1,412.
Roughly 37.3% of adults have a bachelor’s, above the national 35.0%. About 13.7% of the workforce is home-based, close to the national 14.0%, and the average commute runs about 25 minutes each way.
The ownership rate anchors the housing story in Irmo, and tends to move with the age structure and home-value figures above.
Irmo town Population History (2010-2024)
The city of Irmo town had a population of 11,166 in 2010 and 12,086 in 2024, a 8.2% growth over 14 years. The peak was 12,483 in 2019. Average annual growth rate: 0.60%.
12,086
Population (2024)
11,166
Population (2010)
12,483
Peak (2019)
0.60%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 11,166 |
| 2011 | 11,301 |
| 2012 | 11,469 |
| 2013 | 11,647 |
| 2014 | 11,809 |
| 2015 | 11,964 |
| 2016 | 12,077 |
| 2017 | 12,236 |
| 2018 | 12,365 |
| 2019 | 12,483 |
| 2020 | 11,491 |
| 2021 | 11,670 |
| 2022 | 11,825 |
| 2023 | 11,930 |
| 2024 | 12,086 |
Race & Ethnicity
| White | 61.3% |
| Black or African American | 29.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.1% |
| Two or More Races | 0.0% |
Economy & Income
$85,137
Median Household Income
$39,672
Per Capita Income
6.1%
Poverty Rate
5.6%
Unemployment Rate
Housing
$193,100
Median Home Value
$1,412
Median Rent
80.7%
Owner-Occupied
Education
95.9%
High School+
37.3%
Bachelor's+
Commute
0.0%
Drive Alone
76.2%
Public Transit
13.7%
Work From Home
24.8 min
Avg Commute
Community Profile
36.3%
Foreign Born
93.0%
Non-English at Home
8.4%
Veterans
12.9%
With Disability
89.7%
Health Insurance
96.3%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 19.4% |
| Finance, Insurance & Real Estate | 12.3% |
| Construction | 10.5% |
| Arts, Entertainment & Food Services | 8.2% |
| Public Administration | 7.7% |
| Retail Trade | 7.4% |
| Manufacturing | 7.2% |
| Information | 7.1% |
| Education, Health Care & Social Services | 4.5% |
| Transportation & Warehousing | 0.7% |
Largest cities in South Carolina
Largest counties in South Carolina
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City rankings
Frequently Asked Questions
Irmo, South Carolina has a population of 11,799 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 53rd-largest city in South Carolina.
The median household income in Irmo, South Carolina is $85,137, with 6.1% of residents living below the federal poverty level.
The median home value in Irmo, South Carolina is $193,100, with median monthly rent at $1,412 and a homeownership rate of 80.7%.
The median age in Irmo, South Carolina is 39.5 years. The population is 47.7% male and 52.3% female.
The population has grown 8.2% since 2010 (11,166 → 12,086).
Irmo town, SC Climate
Irmo town, SC has an average annual temperature of 16.9°C (62°F) and receives about 1173 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
16.9°C
Avg Temp
1173
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 6° / 44° | 117 mm |
| February | 8° / 47° | 94 mm |
| March | 12° / 54° | 117 mm |
| April | 17° / 62° | 73 mm |
| May | 21° / 70° | 81 mm |
| June | 25° / 77° | 110 mm |
| July | 27° / 81° | 122 mm |
| August | 26° / 79° | 117 mm |
| September | 23° / 74° | 98 mm |
| October | 17° / 63° | 83 mm |
| November | 12° / 54° | 76 mm |
| December | 8° / 47° | 85 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Irmo town, SC
The most comfortable months to visit Irmo town, SC are typically May, September and October, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 33°C high). The coldest is January (near 1°C low). July is usually the wettest month.
Where to stay near Irmo
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Statewide data for South Carolina
Population, race, income, age, and trends across South Carolina
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.