Irmo is home to 11,813 people in South Carolina. 82% of homes are owner-occupied. The typical home is worth $203,400, having more than doubled since 2000. The foreign-born share is 6%. There are 1,681 people per square mile. Households here earn about 16% more than in South Carolina as a whole.
At a glance
Average income
median household income $80,489, near the US median
US median: $82,259
Mid-age
median age 40.3
US median: 38.9
More educated
39% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Irmo
What changed most since 1990
Black share10.9% → 27.4%(+16.5 pts)US over the same years: +0.2 pts
Adults with a bachelor's degree35.9% → 39.2%(+3.3 pts)US over the same years: +15.3 pts
White share86.6% → 58.1%(−28.5 pts)US over the same years: −17.8 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)26.7%(209)
US avg: 26.4%
Gulf War (1990s)29.9%(234)
US avg: 24.3%
Vietnam era34.2%(268)
US avg: 33.1%
Korean War4.1%(32)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 783 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Irmo, decade by decade
Irmo population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
11,280
$101,477
$178,085
35.9%
29.6
2000
11,039
$101,734
$170,689
39.2%
48.0
2010
11,097
$85,255
$186,151
37.9%
64.4
2020
11,569
$91,320
$175,867
36.4%
73.9
2024
11,813
$80,489
$203,400
39.2%
72.5
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
