Irmo, SC Profile: Facts & Data

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Irmo, South Carolina - Basic Facts

The Town of Irmo had a population of 12,277 as of July 1, 2024. Irmo ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in South Carolina. See peer rankings below.

The primary coordinate point for Irmo is located at latitude 34.086 and longitude -81.1832 in Lexington County. The formal boundaries for the Town of Irmo encompass a land area of 6.54 sq. miles and a water area of 0 sq. miles. Lexington County is in the Eastern time zone (GMT -5).

While the primary coordinates for Town of Irmo are located in Lexington County, it should be noted that the formal boundaries for this community also extend into and Richland County.

The Town of Irmo has a P1 Census Class Code which indicates populated place that is also an incorporated place with the same name and the same census code. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

South Carolina is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Town of Irmo is located within Irmo Division of Lexington County.


Jump to... (On This Page!)
  1. Irmo 2024 Demographic Data
  2. Growth Rates for Irmo (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. South Carolina Research Tools (Easy Tools & Current Data)
  3. South Carolina Data Comparison Tool - 2024 Demographics
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Irmo, SC Data & Demographics (As of July 1, 2024)

POPULATION

Total Population 12,277 (100%)
Population in Households 12,230 (99.6%)
Population in Families 10,193 (83.0%)
Population in Group Quarters1 47 ( 0.4%)
Population Density 1,747
Diversity Index2 64
 
 

INCOME

Median Household Income $83,494
Average Household Income $113,289
% of Income for Mortgage4 15%
Per Capita Income $45,166
Wealth Index5 109
Socioeconomic Status Index6 Moderate (54.2)
 

HOUSING

Total HU (Housing Units) 5,155 (100%)
Owner Occupied HU 4,028 (78.1%)
Renter Occupied HU 866 (16.8%)
Vacant Housing Units 261 ( 5.1%)
Median Home Value $195,670
Average Home Value $272,704
Housing Affordability Index3 173
 

HOUSEHOLDS

Total Households 4,894
Average Household Size 2.50
Family Households 3,385
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

2020-2024 2024-2029
Population 1.41% 0.59%
Households 1.66% 0.93%
Families   0.81%
Median Household Income   3.53%
Per Capita Income   3.97%
Owner Occupied HU   1.39%

Irmo, SC - Peer Comparisons by Rank and Percentile

The table below compares Irmo to the other 475 incorporated cities, towns and CDPs in South Carolina by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 53 89th
Population Density # 47 90th
Median Household Income # 49 90th
Housing Affordability Index # 418 88th
Per Capita Income # 54 89th
Diversity Index # 76 84th

Additional comparisons and rankings can be made with a VERY EASY TO USE South Carolina Census Data Comparison Tool.

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