Irmo, South Carolina Population 2020

12,673

Irmo is a city located in South Carolina. With a 2020 population of 12,673, it is the 35th largest city in South Carolina and the 2614th largest city in the United States. Irmo is currently growing at a rate of 1.26% annually and its population has increased by 14.20% since the most recent census, which recorded a population of 11,097 in 2010. Spanning over 7 miles, Irmo has a population density of 1,850 people per square mile.

The average household income in Irmo is $77,811 with a poverty rate of 9.35%. The median rental costs in recent years comes to $1,149 per month, and the median house value is $124,900. The median age in Irmo is 38.2 years, 36.6 years for males, and 40.1 years for females. For every 100 females there are 91.6 males.

Irmo Demographics

According to the most recent ACS, the racial composition of Irmo was:

  • White: 61.71%
  • Black or African American: 32.36%
  • Two or more races: 2.80%
  • Other race: 1.94%
  • Asian: 1.19%
  • Native American: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Irmo, South Carolina is 12,673, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 12,357.The last official US Census in 2010 recorded the population at 11,097.

Irmo, South Carolina Population 2020

Population by Race

Race Population Percentage
White7,45961.71%
Black or African American3,91132.36%
Two or More Races3392.80%
Some Other Race2341.94%
Asian1441.19%

Irmo Population Pyramid 2020

Irmo Median Age

38.2


Total

36.6


Male

40.1


Female

Irmo Adults

There are 9,383 adults, (1,713 of whom are seniors) in Irmo.

Irmo Age Dependency

57.6

Age Dependency Ratio

22.3

Old Age Dependency Ratio

35.3

Child Dependency Ratio

Irmo Sex Ratio

Female

6,310

52.20%

Male

5,777

47.80%

Irmo Households and Families

Irmo Renter vs Owner Occupied by Household Type

Irmo Household Types

Type Owner Renter
Married87.7%12.3%
All76.1%23.9%
Non Family72%28%
Male59.1%40.9%
Female39.7%60.3%

76.1%

Rate of Home Ownership

Type Count Average Size Owned
All4,6082.6276.1
Married2,4423.2687.7
Non Family1,4631.1972
Female5393.4939.7
Male1642.959.1

3.24

Average Family Size

2.62

Average Household Size

2.3%

Unmarried (Opposite Sex)

0.4%

Unmarried (Same Sex)

Irmo Education

Education Attained Count Percentage
Less Than 9th Grade700.84%
9th to 12th Grade4285.11%
High School Graduate1,69520.23%
Some College2,37128.30%
Associates Degree7819.32%
Bachelors Degree1,93523.10%
Graduate Degree1,09713.10%

Irmo Educational Attainment by Race

Name Total High School Bachelors
White5,7065,5332,254
Black2,1521,905635
Hispanic28628677
Multiple Races17514967
Other Race949434
Asian732114

The highest rate of high school graduation is among other race people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 39.50%.

Name Average Male Female
Overall$39,862$46,144$36,430
Less Than High School$25,750$$25,913
High School Grad$28,083$30,294$25,979
Some College$36,651$41,675$33,686
Bachelors Degree$41,393$60,139$37,188
Graduate Degree$55,529$61,534$54,091

$39,862

Average Earnings

$46,144

Average Male

$36,430

Average Female

Irmo Language

Irmo Language by Age

Irmo Language

96.11% of Irmo residents speak only English, while 3.89% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.21% of the population.

Irmo Poverty

Irmo Poverty by Race

Name Total In Poverty Poverty Rate
Black3,90182321.10%
White7,2173014.17%
Multiple33951.47%

9.35%

Overall Poverty Rate

5.61%

Male Poverty Rate

12.77%

Female Poverty Rate

Poverty in Irmo

The race most likely to be in poverty in Irmo is Black, with 21.10% below the poverty level.

The race least likely to be in poverty in Irmo is Multiple, with 1.47% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.08%. Among those working part-time, it was 18.42%, and for those that did not work, the poverty rate was 12.49%.

Name Poverty
Less Than High School22.69%
High School13.57%
Some College2.61%
Bachelors or Greater2.02%
Name Poverty
Female Unemployed27.02%
Male Unemployed20.64%
Female Employed7.26%
Male Employed3.72%

Irmo Income

Irmo Income by Household Type

Name Median Mean
Households$63,713$77,811
Families$72,148$82,680
Married Families$81,000-
Non Families$51,061$60,220

Irmo Marital Status

Irmo Marital Status

Marriage Rates

53.1%

Overall Marriage Rate

55.9%

Male Marriage Rate

50.5%

Female Marriage Rate

Irmo Married by Age and Sex

Irmo Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Irmo Marital Status by Race

Irmo Veterans

1,252

Number of Veterans

1,089

Male Veterans

163

Female Veterans

War Veterans
Vietnam488
First Gulf War328
Second Gulf War274
World War II47
Korea14
Name Veterans % of Total
White1,06917.07%
Black1274.78%
Hispanic7722.00%
Other3430.63%
2 or More2210.43%

$Irmo Veterans by Education

4.79%

Veteran Poverty Rate

26.28%

Veteran Disability Rate

Irmo Employment Status

71.7%

Labor Force Participation

66.6%

Employment Rate

6.8%

Unemployment Rate

Irmo Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

57.39%

Born in South Carolina

98.07%

Native Born

1.93%

Foreign Born

0.79%

Non Citizen

Place of Birth

98.07% of Irmo residents were born in the United States, with 57.39% having been born in South Carolina. 0.79% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Year Population Growth Annual Growth Rate
202012,6731581.26%
201912,5151581.28%
201812,3571261.03%
201712,2311581.31%
201612,0731150.96%
201511,9581601.36%
201411,7981591.37%
201311,6391811.58%
201211,4581641.45%
201111,2941361.22%
201011,1581190.11%
200011,039-241-0.22%
199011,2807,32311.04%
19803,9573,45722.98%
19705001002.26%
19604002003.53%
19402000.00%