29451 ZIP Code — Isle Of Palms, SC

Charleston County, South Carolina

ZIP code 29451 is located in Isle Of Palms, South Carolina, within Charleston County. It covers approximately 9.12 square miles and serves a population of 4,378 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 843.

About ZIP code 29451

The housing stock consists of a mix of housing types. Most homes were built in the 1980s, giving the area an established character. Median home value is $1,073,400. Owner-occupancy is high at 90%, well above the national average.

The gap between median ($164,000) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 2% is below the national average. 42% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 28 minutes is near the national average. Remote work is prevalent — 25% of workers work from home.

Educational attainment is high — 72% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 29451 reflects a community defined by a highly educated population, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

4,378

population

9.12

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

29451 ZIP code map

Cities in ZIP code 29451

Below are the cities the US Postal Service accepts for ZIP code 29451. Using any city not on this list may result in mail delivery delays.

City	Status
Isle Of Palms	Acceptable
Isle Of Palms	Preferred

Nearby ZIP codes

29466 Mount Pleasant (4 mi) 29464 Mount Pleasant (5.7 mi) 29482 Sullivans Island (6 mi) 29492 Charleston (9.3 mi) 29424 Charleston (10.4 mi) 29429 Awendaw (10.4 mi) 29429 Awendaw (10.4 mi) 29409 Charleston (10.5 mi) 29403 Charleston (10.9 mi) 29425 Charleston (11.1 mi) 29401 Charleston (11.1 mi) 29412 Charleston (13.3 mi)

Demographics updated 05/2026

Population
Total population	4,378
Population density	480 / sq mi
State FIPS	45
County FIPS	019

Geography
Land area	9.12 sq mi
Water area	3.41 sq mi
Latitude	32.8141
Longitude	-79.7554
Timezone	Eastern (ET)
Area code	843

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	13.8%	37.6%	45.8%
$50k – $100k	19.6%	27.8%	30.5%
$100k – $200k	31.0%	23.2%	18.6%
Over $200k	35.6%	11.4%	5.1%

Demographics & statistics

4,378

Population

480

People per sq mi

51.9

Median age

$164,000

Median household income

$121,835

Per capita income

$1,073,400

Median home value

$3,103

Median monthly rent

90.1%

Home ownership

2.1%

Poverty rate

0.7%

Unemployment

4,276

Housing units

72.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

144

5–9

132

109

10–14

101

15–19

20–24

130

25–34

120

284

35–44

262

375

45–54

345

157

55–59

145

208

60–64

192

441

65–74

406

155

75–84

142

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	731	16.7%
18 and over	3,647	83.3%
65 and over	1,315	30.0%
Median age	51.9 years

Race & ethnicity

White 96.3%

Asian 2.1%

Hispanic or Latino 0.6%

Two or more races 0.5%

Other race 0.5%

Group	Count	%
White	4,239	96.3%
Asian	92	2.1%
Hispanic or Latino	25	0.6%
Two or more races	24	0.5%
Other race	22	0.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	13.8%	37.6%	45.8%
$50k – $100k	19.6%	27.8%	30.5%
$100k – $200k	31.0%	23.2%	18.6%
Over $200k	35.6%	11.4%	5.1%

Under $10k 3.0%

$10k–$15k 0.3%

$15k–$25k 1.1%

$25k–$35k 4.8%

$35k–$50k 2.5%

$50k–$75k 8.2%

$75k–$100k 10.6%

$100k–$150k 18.7%

$150k–$200k 5.7%

$200k+ 45.2%

Range	% of households
Under $10k	3.0%
$10k–$15k	0.3%
$15k–$25k	1.1%
$25k–$35k	4.8%
$35k–$50k	2.5%
$50k–$75k	8.2%
$75k–$100k	10.6%
$100k–$150k	18.7%
$150k–$200k	5.7%
$200k+	45.2%
Median income	$164,000

Housing

Home values

$150k–$200k 0.6%

$200k–$300k 2.3%

$300k–$500k 2.8%

$500k–$1M 40.2%

$1M+ 54.2%

Housing overview

Metric	Value
Median home value	$1,073,400
Median rent / month	$3,103
Owner occupied	90.1%
Renter occupied	9.9%
Vacant	56.1%
Single-family detached	69.2%
Large apartment buildings	15.2%
Mobile homes	0.0%
Median rooms	6.1
Avg household size (owned)	2.23

Year built

Era	%
2020 or later	0.0%
2010–2019	5.1%
2000–2009	13.3%
1990–1999	17.2%
1980–1989	33.1%
1970–1979	13.1%
1960–1969	8.5%
1950–1959	6.5%
1940–1949	2.6%
1939 or earlier	0.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.1%
1 bedroom	6.5%
2 bedrooms	17.2%
3 bedrooms	37.7%
4 bedrooms	26.1%
5+ bedrooms	12.4%

Vehicles per household

Vehicles	% of households
No vehicle	1.3%
1 vehicle	28.7%
2 vehicles	50.8%
3 or more	19.1%

Heating fuel

Fuel type	%
Utility gas	2.5%
Electricity	88.5%
Propane / LP gas	7.1%
Fuel oil	0.3%
Solar	0.9%
No fuel used	0.8%

Households & families

Household type	Count	%
Married-couple family	1,315	67.0%
Cohabiting couple	39	2.0%
Male householder, no spouse	386	19.7%
Female householder, no spouse	224	11.4%
Households with children under 18	380	19.3%
Households with seniors (65+)	829	42.2%
Average household size	2.23

Marital status

Status	Male	Female
Never married	13.6%	10.6%
Married	70.3%	75.8%
Separated	0.0%	0.5%
Widowed	1.8%	7.8%
Divorced	14.3%	5.3%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.3%

HS graduate 5.6%

Some college, no degree 14.4%

Associate's degree 7.8%

Bachelor's degree 33.2%

Graduate / professional 38.8%

Metric	%
HS diploma or higher	99.7%
Bachelor's or higher	72.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	48	7.3%
Kindergarten	62	9.4%
Elementary school	362	55.1%
High school	115	17.5%
College / grad school	70	10.7%

Employment

Industry of employment

Professional & management 23.1%

Education & healthcare 16.8%

Transportation & utilities 13.8%

Arts, food & hospitality 8.2%

Manufacturing 7.9%

Retail trade 7.4%

Finance & real estate 5.2%

Wholesale trade 4.9%

Construction 4.2%

Other services 3.2%

Public administration 2.7%

Information 2.1%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	62.4%
Service	7.6%
Sales & office	19.3%
Natural resources & construction	2.6%
Production & transportation	8.1%

Employment type

Type	%
Private sector	79.3%
Government	9.6%
Self-employed	11.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	64.7%
Carpool	6.0%
Public transit	0.4%
Walk	1.6%
Work from home	24.6%
Other means	2.7%
Avg commute (minutes)	28.4

Poverty

All people 2.1%

Under 18 years 0.0%

18 and over 2.6%

Married-couple families 1.2%

Female-led households 0.0%

Income support

Source	% of households
Social Security	42.0%
Retirement income	31.1%
Supplemental Security	3.2%
Cash public assistance	0.6%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	25.1%
High blood pressure	34.2%
High cholesterol	41.4%
Diabetes	9.5%
Heart disease	6.4%
Stroke	2.6%
Asthma	8.1%
Arthritis	29.7%
Kidney disease	2.7%
Pulmonary disease	5.1%
Cancer	9.0%

Behavior / access	%
Smoking	9.0%
Binge drinking	19.0%
No physical activity	13.7%
Less than 7 hrs sleep	28.0%
Depression	19.5%
Fair or poor health	9.0%
Poor mental health	10.1%
Poor physical health	8.0%
No health insurance	7.6%
Visited doctor (checkup)	80.4%
Visited dentist	81.3%
Cholesterol screening	94.8%
Teeth loss	5.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	400	11.0%

Disability	%
Any disability	7.9%
Under 18	5.1%
18–64 years	4.1%
65 and over	16.2%

Health insurance coverage

Type	%
Private insurance	85.3%
Public insurance	34.7%
No insurance	4.1%
Uninsured under 19	5.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,213	96.2%
Spanish	9	0.2%
Other Indo-European	9	0.2%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,083	93.3%
Born in same state	3,908	89.3%
Born in different state	1,409	32.2%
Foreign born	175	4.0%
Naturalized citizen	295	6.7%
Not a US citizen	256	86.8%

Ancestry

Ancestry	Count	%
French	1,098	25.1%
Italian	705	16.1%
Arab	569	13%
English	157	3.6%

Ancestry	Count	%
Polish	99	2.3%
Irish	49	1.1%
Norwegian	14	0.3%
German	4	0.1%

Technology access

Metric	% of households
Computer access	44.9%
Internet access	99.6%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 29451

What city is ZIP code 29451 in?

ZIP code 29451 is primarily assigned to Isle Of Palms, South Carolina.

What county is ZIP code 29451 in?

ZIP code 29451 falls within Charleston County, South Carolina.

How educated is the population of ZIP code 29451?

72% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 29451 have an older population?

30% of residents in ZIP code 29451 are 65 or older, above the national average of ~17%.

Is ZIP code 29451 mostly owner-occupied?

90% of occupied units in ZIP code 29451 are owner-occupied, well above the national average.

Does ZIP code 29451 have a large retiree population?

42% of households in ZIP code 29451 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 29451 in?

ZIP code 29451 observes the EST timezone.