Editing Irmo, South Carolina (section)

==Demographics==
{{US Census population
|1900= 193
|1910= 267
|1920= 236
|1930= 365
|1940= 230
|1950= 281
|1960= 359
|1970= 517
|1980= 3957
|1990= 11280
|2000= 11039
|2010= 11097
|2020= 11569
|footnote=U.S. Decennial Census<ref name="DecennialCensus">{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=Census of Population and Housing|publisher=Census.gov|access-date=June 4, 2015|archive-date=April 26, 2015|archive-url=https://web.archive.org/web/20150426102944/http://www.census.gov/prod/www/decennial.html|url-status=live}}</ref><ref name="USCensusDecennial2020CenPopScriptOnly">{{cite web|url=https://api.census.gov/data/2020/dec/pl?get=P1_001N,NAME&for=place:*&in=state:45&key=5ccd0821c15d9f4520e2dcc0f8d92b2ec9336108|title=Census Population API|publisher=United States Census Bureau|accessdate=October 15, 2022}}</ref>
}}

===2020 census===
{| class="wikitable"
|+Irmo racial composition<ref>{{Cite web|title=Explore Census Data|url=https://data.census.gov/cedsci/table?g=1600000US4535890&tid=DECENNIALPL2020.P2|access-date=December 13, 2021|website=data.census.gov}}</ref>
!Race
!Num.
!Perc.
|-
|[[White (U.S. Census)|White]] (non-Hispanic)
|6,466
|55.89%
|-
|[[African American (U.S. Census)|Black or African American]] (non-Hispanic)
|3,518
|30.41%
|-
|[[Native American (U.S. Census)|Native American]]
|42
|0.36%
|-
|[[Asian (U.S. Census)|Asian]]
|241
|2.08%
|-
|[[Pacific Islander (U.S. Census)|Pacific Islander]]
|29
|0.25%
|-
|[[Race (United States Census)|Other/Mixed]]
|610
|5.27%
|-
|[[Hispanic (U.S. Census)|Hispanic]] or [[Latino (U.S. Census)|Latino]]
|663
|5.73%
|}
As of the [[2020 United States census]], there were 11,569 people, 4,686 households, and 3,327 families residing in the town.

As of 2023, of the 11,519 people, about 7,550 are in Richland County and about 4,019 are in Lexington County.<ref>{{cite web|url=https://info2.scdot.org/GISMapping/GISMapdl/Lexington_County.pdf|title=General Highway System Lexington County, South Carolina|publisher=[[South Carolina Department of Transportation]]|date=February 2023|access-date=2024-10-25}}</ref>

===2000 census===
As of the census of 2000, there are 11,039 people, 3,911 households, and 3,163 families residing in the town. The population density is 1,032.0/km² (2,670.2/mi²). There are 4,066 housing units at an average density of 380.1/km² (983.5/mi²). The racial makeup of the town is 76.76% White, 20.16% African American, 0.25% Native American, 1.43% Asian, 0.08% Pacific Islander, 0.44% from other races, and 0.88% from two or more races. 1.42% of the population are Hispanic or Latino of any race.

There were 3,911 households, out of which 47.7% had children under the age of 18 living with them, 65.9% were [[Marriage|married couples]] living together, 12.0% had a female householder with no husband present, and 19.1% were non-families. 15.4% of all households were made up of individuals, and 2.6% had someone living alone who was 65 years of age or older. The average household size was 2.81 and the average family size was 3.15.

In the town, the population was spread out, with 30.7% under the age of 18, 6.6% from 18 to 24, 34.6% from 25 to 44, 23.3% from 45 to 64, and 4.8% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 93.6 males. For every 100 females age 18 and over, there were 88.7 males.

The median income for a household in the town was $55,847, and the median income for a family was $62,005. Males had a median income of $41,054 versus $30,171 for females. The [[per capita income]] for the town was $22,312. About 3.3% of families and 4.3% of the population were below the [[poverty line]], including 4.4% of those under age 18 and 11.6% of those age 65 or over.