City profile · South Carolina · Census ACS 2023

Irmo, SC

Population, income, housing, safety, climate and schools for Irmo — drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.

11,799
Residents
$85,137
Median income
$193,100
Median home
$1,155
Median rent

Data Snapshot: Irmo, SC

Irmo is a city in South Carolina with a population of 11,799 residents based on U.S. Census Bureau ACS 2023 estimates. Median household income here reaches $85,137 per year, while the poverty rate sits at 6.1%. Typical homes in Irmo are valued around $193,100, and the median resident age is 39.5 years. About 37.3% of adults hold a bachelor's degree or higher, while 61.9% of working-age residents are in the labor force.

FBI UCR reporting places total crime at 1806.5 incidents per 1,000 residents, above the national average, indicating elevated public-safety concerns.

On a cost-of-living index where 100 equals the national average, South Carolina registers 93.7 (Near Average) per BEA Regional Price Parities 2024. HUD Fair Market Rent for a typical two-bedroom in this state is $1,155 per month. Average monthly utility bills run around $224 based on EIA 2023 residential energy data. FEMA's National Risk Index rates natural-hazard exposure at 70.7 out of 100 (High).

According to the U.S. Census Bureau's 2023 American Community Survey (ACS) 5-year estimates, PlainCities renders standardized city-level demographic, income, education, employment, and housing indicators across more than 19,000 incorporated places nationwide. Population counts and median household income figures are sourced directly from Census Table B01003 and B19013 respectively, with poverty rates from B17001 and cost-of-living adjustments from the Bureau of Economic Analysis (BEA) Regional Price Parities (RPP) 2024 release. Every value displayed in this snapshot links back to the official upstream tables and is refreshed on the ACS annual release cadence (typically December of the survey year + 1).

Methodology: city boundaries follow the Census Bureau's place-level geography (incorporated places, census-designated places, and consolidated city-county governments), with FIPS codes ensuring consistent identifiers across decennial and annual surveys. Cost-of-living comparisons use BEA's Regional Price Parities (RPP) indexed to the national average (100), enabling cross-city purchasing-power comparisons. See our methodology page for full source attribution, refresh cadence, and known data quality limitations including margin-of-error disclosure and sample-size thresholds.

Population

11,799 residents

Census ACS 2023 — South Carolina

Median Household Income

$85,137 /yr

Poverty 6.1%

Cost of Living Index

93.7 (US=100)

Near Average — BEA RPP 2024

How does Irmo compare to other US cities?

Where Irmo sits among all US cities (population 1,000+) on each measure — computed live from Census and FBI data.

Household income 67% higher than other cities
Home value 41% pricier than other cities
Median rent 46% pricier than other cities
Safety 37% safer than other cities

Percentiles compare Irmo against every US city with at least 1,000 residents. "Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.

Income distribution context

Household income distribution — Irmo, SC Quintile shares of aggregate household income for Irmo, SC. The Lorenz curve traces cumulative income share against cumulative population share — perfect equality is the diagonal; observed inequality bows below. $ Household Income Distribution Irmo, SC — median $85,137/yr — Census ACS quintile shares QUINTILE SHARE OF AGGREGATE INCOME Lowest 20% 3.4% Second 20% 9.2% Middle 20% 15.1% Fourth 20% 23.2% Top 20% 49.1% LORENZ CURVE cumulative income vs. population 100% 0% 100% pop. 0%
Household income distribution for Irmo, SC — Census ACS 5-year estimates. Diagonal = perfect equality.

Key socioeconomic indicators

Bachelor's degree or higher (adults 25+) 37.3%

Census ACS S1501 — educational attainment

Poverty rate (households below FPL) 6.1%

Census ACS S1701 — poverty status

Labor force participation (adults 16+) 61.9%

Census ACS S2301 — share of working-age residents in the labor force

Population
11,799
Median Income
$85,137
Median Home Value
$193,100
Median Age
39.5
Poverty Rate
6.1%
Labor force participation
61.9%
Bachelor's Degree+
37.3%

Safety & Crime

Total Crime Rate
1806.5
per 1,000 residents
Violent Crime
238.1
per 1,000 residents
Property Crime
1568.4
per 1,000 residents

Schools

Total Schools
9
Public schools in this city

Commute Patterns

How workers travel to work — Census ACS 2023

Drive Alone
76.2%
Carpool
9.8%
Public Transit
0.0%
Walk
0.3%
Work from Home
13.7%

Based on 5,997 workers 16 and over.

Monthly Utility Costs

State-average estimates for South Carolina — EIA 2023 residential energy data

Electricity
$130
avg/month
Natural Gas
$52
avg/month
Water & Sewer
$42
avg/month
Total Utilities
$224
estimated/month

Estimates reflect South Carolina state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.

Living Costs & Risk

South Carolina state-level data from PlainCost, PlainRent, and PlainHazard

Cost of Living Index
93.7
Near Average
US average = 100 · BEA RPP 2024
Typical 2-BR Rent
$1,155/mo
HUD Fair Market Rent
State-level FMR estimate
Natural Hazard Risk
70.7 / 100
High
FEMA NRI composite score

Race & Ethnicity Composition

Race and ethnicity — Irmo, SC Race categories sum to one hundred percent per Census methodology. Hispanic or Latino is shown separately as an ethnicity overlay; it cuts across all race categories per OMB Directive 15. Race & Ethnicity Composition Irmo, SC — Census ACS, OMB race + ethnicity categories RACE — sums to 100% 59.5% 12.1% 6.1% 10.6% 10.3% ETHNICITY — Hispanic or Latino (any race) 18.7% White 59.5% Black or African American 12.1% Asian 6.1% American Indian 1.2% Native Hawaiian 0.2% Some other race 10.6% Two or more races 10.3% Per OMB Directive 15: Hispanic/Latino ethnicity is reported separately from the race categories.
Race categories sum to 100%. Hispanic or Latino ethnicity is reported separately and cuts across race per Census/OMB methodology.

National-average reference values shown when city-level race/ethnicity table is not loaded. Source: Census ACS 5-year, OMB Directive 15 race-and-ethnicity categories.

How Irmo compares to nearby South Carolina cities

Census ACS 2023 — population and median income benchmarks

Side-by-side population + income comparison anchored on the current city (Irmo) plus the nearest peer cities in South Carolina, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).
Selected

SC

Irmo

85.14% top marginal rate
Structure
Progressive
Burden @ $100K
$85,137
Brackets
12
Selected

SC

James Island

65.00% top marginal rate
Structure
Progressive
Burden @ $100K
$1,170
Brackets
12
Selected

SC

Oak Grove

65.00% top marginal rate
Structure
Progressive
Burden @ $100K
$1,200
Brackets
12
Selected

SC

Powdersville

65.00% top marginal rate
Structure
Progressive
Burden @ $100K
$1,130
Brackets
11
Census ACS 5-year FIPS SC FBI UCR NCES CCD OMB Bulletin 23-01

What do people ask about Irmo, SC?

What is the population of Irmo, SC? +

Irmo, SC has a population of 11,799 according to U.S. Census Bureau ACS 2023 estimates.

What is the median household income in Irmo, SC? +

The median household income in Irmo is $85,137 per year, based on Census ACS 2023 data.

What is the cost of living in Irmo? +

Irmo has a cost of living index of 93.7 (U.S. average = 100), rated "Near Average" based on BEA Regional Price Parities 2024 data.

Is Irmo, SC safe? +

Irmo has a total crime rate of 1806.5 per 1,000 residents, which is above the national average. Source: FBI UCR data.

What is the median home value in Irmo, SC? +

The median home value in Irmo is $193,100, according to Census ACS 2023 estimates.

Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NCES CCD, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.

Related

Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainCities Editorial

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