29455 ZIP Code — Johns Island, SC

Charleston County, South Carolina

ZIP code 29455 is located in Johns Island, South Carolina, within Charleston County. It covers approximately 100.24 square miles and serves a population of 25,449 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 843.

About ZIP code 29455

The housing stock consists of predominantly single-family detached homes. Much of the housing stock is relatively new, reflecting recent development activity. Median home value is $456,800. Owner-occupancy is high at 87%, well above the national average.

The gap between median ($111,300) and mean household income suggests income inequality — a small number of higher earners pull the average up. 36% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 30 minutes is near the national average.

Educational attainment is high — 55% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 29455 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

25,449

population

100.24

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

29455 ZIP code map

Cities in ZIP code 29455

Below are the cities the US Postal Service accepts for ZIP code 29455. Using any city not on this list may result in mail delivery delays.

City	Status
Johns Island	Acceptable
Johns Island	Preferred

Nearby ZIP codes

29487 Wadmalaw Island (6.3 mi) 29407 Charleston (8.3 mi) 29412 Charleston (9.1 mi) 29414 Charleston (9.3 mi) 29401 Charleston (9.9 mi) 29425 Charleston (10 mi) 29449 Hollywood (10.2 mi) 29409 Charleston (10.5 mi) 29403 Charleston (10.6 mi) 29424 Charleston (10.8 mi) 29470 Ravenel (11 mi) 29405 North Charleston (11.3 mi)

Demographics updated 05/2026

Population
Total population	25,449
Population density	254 / sq mi
State FIPS	45
County FIPS	019

Geography
Land area	100.24 sq mi
Water area	9.93 sq mi
Latitude	32.7187
Longitude	-80.0980
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	23.7%	37.6%	45.8%
$50k – $100k	31.4%	27.8%	30.5%
$100k – $200k	30.9%	23.2%	18.6%
Over $200k	13.9%	11.4%	5.1%

Demographics & statistics

25,449

Population

254

People per sq mi

51.2

Median age

$111,300

Median household income

$68,784

Per capita income

$456,800

Median home value

$1,410

Median monthly rent

86.6%

Home ownership

8.1%

Poverty rate

2.0%

Unemployment

15,116

Housing units

55.0%

Bachelor's or higher

Age distribution

Male Female

704

Under 5

749

313

5–9

332

473

10–14

503

287

15–19

306

686

20–24

730

1,446

25–34

1,537

1,403

35–44

1,490

1,280

45–54

1,361

1,093

55–59

1,162

1,485

60–64

1,578

2,161

65–74

2,296

832

75–84

885

173

85+

184

← Male

Female →

Age summary

Group	Count	%
Under 18	3,523	13.8%
18 and over	21,926	86.2%
65 and over	6,531	25.7%
Median age	51.2 years

Race & ethnicity

White 73%

Black or African American 12.7%

Hispanic or Latino 4.9%

Two or more races 3.6%

Other race 3.3%

American Indian / Alaska Native 2.3%

Asian 0.2%

Group	Count	%
White	19,526	73%
Black or African American	3,404	12.7%
Hispanic or Latino	1,300	4.9%
Two or more races	960	3.6%
Other race	893	3.3%
American Indian / Alaska Native	624	2.3%
Asian	42	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.7%	37.6%	45.8%
$50k – $100k	31.4%	27.8%	30.5%
$100k – $200k	30.9%	23.2%	18.6%
Over $200k	13.9%	11.4%	5.1%

Under $10k 3.5%

$10k–$15k 1.4%

$15k–$25k 4.7%

$25k–$35k 3.9%

$35k–$50k 6.9%

$50k–$75k 13.9%

$75k–$100k 11.2%

$100k–$150k 20.8%

$150k–$200k 13.6%

$200k+ 20.1%

Range	% of households
Under $10k	3.5%
$10k–$15k	1.4%
$15k–$25k	4.7%
$25k–$35k	3.9%
$35k–$50k	6.9%
$50k–$75k	13.9%
$75k–$100k	11.2%
$100k–$150k	20.8%
$150k–$200k	13.6%
$200k+	20.1%
Median income	$111,300

Housing

Home values

Under $50k 2.0%

$50k–$100k 1.7%

$100k–$150k 3.0%

$150k–$200k 4.6%

$200k–$300k 13.7%

$300k–$500k 30.8%

$500k–$1M 27.9%

$1M+ 16.3%

Housing overview

Metric	Value
Median home value	$456,800
Median rent / month	$1,410
Owner occupied	86.6%
Renter occupied	13.4%
Vacant	33.0%
Single-family detached	73.1%
Large apartment buildings	3.9%
Mobile homes	4.7%
Median rooms	6.3
Avg household size (owned)	2.19

Year built

Era	%
2020 or later	2.0%
2010–2019	24.0%
2000–2009	19.3%
1990–1999	15.1%
1980–1989	17.2%
1970–1979	11.8%
1960–1969	4.0%
1950–1959	3.7%
1940–1949	1.1%
1939 or earlier	1.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	5.5%
2 bedrooms	14.0%
3 bedrooms	48.6%
4 bedrooms	22.7%
5+ bedrooms	8.5%

Vehicles per household

Vehicles	% of households
No vehicle	1.7%
1 vehicle	24.3%
2 vehicles	53.8%
3 or more	20.2%

Heating fuel

Fuel type	%
Utility gas	21.8%
Electricity	71.6%
Propane / LP gas	5.8%
Fuel oil	0.1%
Wood	0.5%

Households & families

Household type	Count	%
Married-couple family	6,780	61.0%
Cohabiting couple	654	5.9%
Male householder, no spouse	1,012	9.1%
Female householder, no spouse	2,676	24.1%
Households with children under 18	2,019	18.2%
Households with seniors (65+)	4,268	38.4%
Average household size	2.28

Marital status

Status	Male	Female
Never married	25.2%	18.8%
Married	66.8%	61.1%
Separated	1.3%	2.1%
Widowed	1.4%	7.1%
Divorced	5.3%	11.0%

Education

Less than 9th grade 1.4%

Some HS, no diploma 4.5%

HS graduate 17.3%

Some college, no degree 14.4%

Associate's degree 7.4%

Bachelor's degree 27.9%

Graduate / professional 27.1%

Metric	%
HS diploma or higher	94.1%
Bachelor's or higher	55.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	444	12.3%
Kindergarten	191	5.3%
Elementary school	1,265	35.1%
High school	565	15.7%
College / grad school	1,142	31.7%

Employment

Industry of employment

Education & healthcare 21.4%

Professional & management 19.6%

Arts, food & hospitality 11.3%

Retail trade 9.4%

Finance & real estate 8.5%

Manufacturing 7.0%

Construction 6.9%

Other services 4.6%

Public administration 4.1%

Wholesale trade 2.6%

Transportation & utilities 2.3%

Information 1.6%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	52.4%
Service	18.2%
Sales & office	17.3%
Natural resources & construction	5.1%
Production & transportation	7.0%

Employment type

Type	%
Private sector	77.2%
Government	12.8%
Self-employed	9.9%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	71.8%
Carpool	9.9%
Public transit	0.8%
Walk	1.0%
Work from home	15.3%
Other means	1.2%
Avg commute (minutes)	30.0

Poverty

All people 8.1%

Under 18 years 18.9%

18 and over 6.4%

Married-couple families 3.7%

Female-led households 6.7%

Income support

Source	% of households
Social Security	35.6%
Retirement income	30.4%
Supplemental Security	2.8%
Cash public assistance	0.9%
Food stamps / SNAP	3.2%

Health indicators

Condition	%
Obesity	29.5%
High blood pressure	34.6%
High cholesterol	35.9%
Diabetes	10.7%
Heart disease	5.9%
Stroke	2.9%
Asthma	9.0%
Arthritis	27.1%
Kidney disease	2.8%
Pulmonary disease	5.3%
Cancer	7.1%

Behavior / access	%
Smoking	12.8%
Binge drinking	19.7%
No physical activity	18.0%
Less than 7 hrs sleep	33.1%
Depression	20.0%
Fair or poor health	11.9%
Poor mental health	12.2%
Poor physical health	9.1%
No health insurance	13.5%
Visited doctor (checkup)	79.3%
Visited dentist	73.8%
Cholesterol screening	91.9%
Teeth loss	8.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,586	7.3%

Disability	%
Any disability	9.3%
Under 18	2.4%
18–64 years	6.7%
65 and over	19.6%

Health insurance coverage

Type	%
Private insurance	74.2%
Public insurance	34.1%
No insurance	9.0%
Uninsured under 19	4.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	23,996	94.3%
Spanish	516	2.2%
Other Indo-European	449	1.9%
Asian & Pacific Islander	41	0.2%
Other languages	26	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	24,116	94.8%
Born in same state	23,682	93.1%
Born in different state	9,675	38.0%
Foreign born	434	1.7%
Naturalized citizen	1,333	5.2%
Not a US citizen	647	48.5%

Ancestry

Ancestry	Count	%
French	4,116	16.2%
Italian	3,611	14.2%
Arab	2,822	11.1%
English	271	1.1%
Polish	183	0.7%

Ancestry	Count	%
Irish	116	0.5%
Norwegian	94	0.4%
German	55	0.2%
Dutch	20	0.1%

Technology access

Metric	% of households
Computer access	43.7%
Internet access	96.6%

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

Frequently asked questions about ZIP code 29455

What city is ZIP code 29455 in?

ZIP code 29455 is primarily assigned to Johns Island, South Carolina.

What county is ZIP code 29455 in?

ZIP code 29455 falls within Charleston County, South Carolina.

Does ZIP code 29455 have an older population?

26% of residents in ZIP code 29455 are 65 or older, above the national average of ~17%.

How educated is the population of ZIP code 29455?

55% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 29455 mostly owner-occupied?

87% of occupied units in ZIP code 29455 are owner-occupied, well above the national average.

Does ZIP code 29455 have a large retiree population?

36% of households in ZIP code 29455 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 29455 in?

ZIP code 29455 observes the EST timezone.