Demographics of Irmo town, South Carolina

Irmo town, South Carolina had 12,204 people on July 1, 2025, by the Census Bureau’s estimate: +693 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Irmo town, in four figures

12,204
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 11,813 ±49.; +6.0%
Change since July 2020: +693 people.; 40.3 ±2.0
Median age: ACS 2020–⁠2024.; $80,489 ±$17,507
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Irmo town, South Carolina's population grew 6.0% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Irmo town, South Carolina's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Irmo town, South Carolina's population grew 6.0% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Irmo town, South Carolina's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	11,511	100.0	100.0
2021	11,690	101.6	100.2
2022	11,843	102.9	100.7
2023	11,938	103.7	101.6
2024	12,110	105.2	102.5
2025	12,204	106.0	103.1

Population of Irmo town, South Carolina on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	11,511	—
2021	11,690	+179
2022	11,843	+153
2023	11,938	+95
2024	12,110	+172
2025	12,204	+94

Age, 2020–2024

The median age is 40.3 ±2.0: for men 37.3 ±6.9 and for women 41.1 ±3.5. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Irmo town by age, ACS 2020–2024
Age	People	Share	South Carolina	United States
Under 5	422 ±181	3.6% ±1.5	5.5% ±<0.1	5.6% ±<0.1
5 to 17	2,279 ±403	19.3% ±3.4	16.0% ±0.1	16.3% ±<0.1
18 to 24	746 ±258	6.3% ±2.2	9.1% ±0.1	9.1% ±<0.1
25 to 44	3,329 ±527	28.2% ±4.5	25.3% ±0.1	26.9% ±<0.1
45 to 64	3,203 ±550	27.1% ±4.7	25.2% ±0.1	24.8% ±<0.1
65 and over	1,834 ±301	15.5% ±2.5	18.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $80,489 ±$17,507, and income per person $40,333 ±$4,779, in 2024 dollars. The median is $69,324 ±$570 in South Carolina and $80,734 ±$166 in the United States.

Households by income

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Households in Irmo town by income, ACS 2020–2024
Household income	Households	Share	South Carolina	United States
Under $25,000	427 ±140	9.2% ±3.0	17.0% ±0.2	14.6% ±<0.1
$25,000 to $49,999	798 ±257	17.2% ±5.4	19.6% ±0.3	16.7% ±<0.1
$50,000 to $74,999	941 ±295	20.3% ±6.2	17.0% ±0.3	15.5% ±<0.1
$75,000 to $99,999	600 ±215	13.0% ±4.6	13.1% ±0.2	12.6% ±<0.1
$100,000 to $149,999	693 ±174	15.0% ±3.6	16.4% ±0.2	17.5% ±<0.1
$150,000 to $199,999	468 ±184	10.1% ±3.9	8.0% ±0.2	9.6% ±<0.1
$200,000 or more	341 to 1,069	7.4% to 23.0%	8.9% ±0.2	13.4% ±0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Irmo town by age, ACS 2020–2024
Age	Below poverty	Rate	South Carolina	United States
All ages	1,080 ±464	9.2% ±3.9	14.1% ±0.2	12.5% ±0.1
Under 18	416 ±184	15.5% ±6.3	19.4% ±0.4	16.1% ±0.1
18 to 59	498 ±225	7.7% ±3.4	13.1% ±0.2	11.6% ±0.1
60 and over	78 to 254	3.2% to 9.5%	11.6% ±0.3	11.0% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Housing, 2020–2024

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Housing in Irmo town, ACS 2020–2024
Measure	Irmo town	South Carolina	United States
Housing units	4,876 ±316	2,443,039 ±311	143,775,355 ±10,234
Occupied	95.0% ±8.5	86.7% ±0.2	89.9% ±0.1
Vacant	2.1% to 7.9%	13.3% ±0.2	10.1% ±0.1
Owner occupied	81.6% ±5.2	71.9% ±0.3	65.2% ±0.3
Renter occupied	18.4% ±5.1	28.1% ±0.3	34.8% ±0.1
Median home value	$203,400 ±$18,424	$259,000 ±$1,421	$332,700 ±$236
Median gross rent	$1,477 ±$129	$1,180 ±$9	$1,413 ±$2
Median year built	1985 ±2	1992 ±1	1980 ±1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Irmo town by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	South Carolina	United States
Hispanic or Latino	667 ±293	5.6% ±2.5	7.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	6,868 ±710	58.1% ±6.0	61.9% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	3,234 ±610	27.4% ±5.2	24.6% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	88 to 920	0.7% to 7.8%	1.7% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 6	0% to 0.1%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 22	0% to 0.2%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 29	0% to 0.2%	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	207 to 847	1.8% to 7.2%	3.7% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Irmo town by place of birth and citizenship, ACS 2020–2024
Born	People	Share	South Carolina	United States
Born in the state	7,030 ±628	59.5% ±5.3	52.6% ±0.2	57.3% ±<0.1
Born in another state	3,930 ±583	33.3% ±4.9	40.4% ±0.2	26.9% ±<0.1
Born a citizen outside the states	183 ±84	1.5% ±0.7	1.2% ±0.1	1.7% ±<0.1
Born abroad	670 ±310	5.7% ±2.6	5.8% ±0.1	14.1% ±<0.1
Naturalized citizens	179 to 597	1.5% to 5.1%	2.6% ±0.1	7.4% ±<0.1
Not citizens	136 to 428	1.2% to 3.6%	3.2% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Irmo town among the places of South Carolina

55th of 102 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the South Carolina page.

Places of South Carolina near Irmo town in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Parker CDP	12,898 ±1,630
Gaffney city	12,596 ±66
Oak Grove CDP	12,256 ±904
James Island town	12,198 ±26
Fountain Inn city	12,020 ±28
Irmo town	11,813 ±49
Little River CDP	11,771 ±1,091
Garden City CDP	11,591 ±744
Red Bank CDP	11,314 ±947
Hardeeville city	10,871 ±299
Newberry city	10,790 ±80

Rankings this appears in

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026