All ZIP Codes, Map and Demographics of Johns Island, SC

29455 & 29457 (PO Box) are the only ZIP Codes for Johns Island, SC

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Data Last Updated: March 1, 2026
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ZIP Codes:29455 & 29457 (PO Box) [See All]
County:Charleston County, SC
Area Codes:843,854
Time Zone:Eastern (GMT -05:00)
Local Time:12:00:00 AM
Population:28,344 (ZIP Codes) [More Demographics]
Statistical Area:Charleston-North Charleston, SC [Learn More]
Coordinates:32.6908, -80.0900
Land Area:100.24 sq miles (ZIP Codes)
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Johns Island, SC has 2 ZIP Codes

ZIP CodeTypePopulationPop% of Population% of PopAlias Names
29455Standard28,344100.00%Kiawah Island,Seabrook Isl,Seabrook Island
29457 P.O. Box00.00%
28,344 people in Johns Island, SC — get this data and hundreds of fields for every U.S. ZIP code View Database Try API
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Population & Demographics

Data labeled as "All ZIP Codes" is a total (or average) for every ZIP Code with Johns Island, SC assigned by the USPS. The U.S. Postal Service provides a name (and aliases) for every ZIP Code which can include cities, towns, villages, and other incorporated names.

There is currently no matching U.S. Census Place for this geographic area. Many rural areas may have such low population density that they will not be part of any U.S. Census Place.

Total Population:28,344
Total Households:12,126
Total Housing Units:16,947
Average Household Size:2.33
Average Family Size:2.84

All ZIP Codes assigned this City name by the USPS.

Population Over Time (with 2010 & 2020 Census Benchmarks)

Line chart of All ZIPs in Johns Island, SC population estimates from 2011-2024, with markers for the 2010 and 2020 Decennial Census counts to show growth or decline over time. Chart loads automatically and replaces this content. Load Chart Manually (if needed)
Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--19,63620,11421,63121,42121,89321,19821,99022,02422,56522,49224,35425,44926,308
Decennial Census20,478------------------28,344------
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)

Median Age: 45.5

Male Median Age: 44.3

Female Median Age: 46.7

Line Chart showing the population by Age Group and Gender of all ZIPs in Johns Island, South Carolina. One line shows the Total population in that age group, another line shows the Male population for that age group, and the last line shows the Female population for the given age group. A table also provides the same information. Chart loads automatically and replaces this content. Load Chart Manually (if needed)
Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male8196666205505408211,1249998237227849311,0371,0941,048628311187
Female7466416385635819091,1949388477378591,1511,2951,3081,096611309217
Total1,5651,3071,2581,1131,1211,7302,3181,9371,6701,4591,6432,0822,3322,4022,1441,239620404
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
Pie Chart & Table (ZIPs)Comparison Chart

Population by Race

Pie Chart showing Population by Race for all ZIPs in Johns Island, South Carolina. Chart loads automatically and replaces this content. Load Chart Manually (if needed)
White:20,92871.70%
Black:4,26914.63%
Hispanic:*2,3277.97%
Asian:2100.72%
American Indian:970.33%
Hawaiian:150.05%
Other:1,3414.59%
Total:29,187100%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.
Pie Chart & Table (ZIPs)Comparison Chart

Gender Breakdown

Pie chart showing Male vs Demale share of the population. Chart loads automatically and replaces this content. Load Chart Manually (if needed)
GenderCountPercentageMedian Age
Males:13,70448.35%44.3 years
Females:14,64051.65%46.7 years
Total:28,344100%45.5 years

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
Pie Chart & Table (ZIPs)

Nativity & Citizenship

Native, born in the United States:24,45592.96%
Native, born in PR, Island Areas, or abroad:4711.79%
Foreign born, naturalized U.S. citizen:6082.31%
Foreign born, not a U.S. citizen:7745.25%
Total Population:26,308100%
Total Native Population:24,92694.75%
Total Foreign-born Population:1,3825.25%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment

Median Income Over Time (Household, Family, Nonfamily, Male, Female)

Line Chart showing Median Income Estimates from 2011 until 2024 of Median Household Income, Median Family Income, Median Nonfamily Income, Median Male Income, and Median Female Income for all ZIPs in Johns Island, South Carolina. A table also provides the same information. Chart loads automatically and replaces this content. Load Chart Manually (if needed)
Income Type2011210220132014201520162017201820192020202120222023
Median Household Income$57,196$58,321$60,954$63,166$64,924$69,878$73,923$73,418$79,132$89,846$94,298$111,300$117,422
Median Family Income$70,096$70,030$77,088$83,304$84,479$86,314$94,737$84,325$88,972$100,377$107,139$122,451$132,321
Median NonFamily Income$41,954$41,705$36,855$35,785$35,221$36,285$41,395$50,570$55,705$60,741$59,750$68,486$71,673
Median Male Income$40,027$40,669$48,068$51,404$51,528$53,490$52,763$50,041$51,145$54,844$57,578$67,401$74,804
Median Female Income$30,970$30,882$30,931$31,179$31,881$40,588$44,477$46,558$50,676$53,729$54,293$63,303$67,266
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income

Bar Chart showing Average Household Income for all ZIPs in Johns Island, SC, the U.S. Census Place, Charleston County, the state of South Carolina, and the United States National Average. Chart loads automatically and replaces this content. Load Chart Manually (if needed)
Source: U.S. Census 2019-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS
Pie Chart & Table (ZIPs)Comparison Chart

Employment Status

Employment status for all ZIPs in Johns Island, SC: employed, unemployed, and not in the labor force. Chart loads automatically and replaces this content. Load Chart Manually (if needed)
Employed:14,02061.83%
Unemployed:2671.18%
Not In Labor Force:8,38937.00%
Total:22,676100%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS
Pie Chart & Table (ZIPs)

Employment by Occupation (Civilian Employed Population, 16 and Over)

Management, business, science, and arts:8,00457.09%
Service:2,29416.36%
Sales and Office:2,04614.59%
Natural resources, construction, and maintenance:6864.89%
Production, transportation, and material moving:9907.06%
Total Civilian Employed Population:14,020100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability

Median Home Value (Comparison)

Bar Chart showing median House Value for all ZIPs in Johns Island, South Carolina, the U.S. Census Place, Charleston County, South Carolina, and the United States National Average. Chart loads automatically and replaces this content. Load Chart Manually (if needed)
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Median Home Value Over Time (2011-2024)

Group2011210220132014201520162017201820192020202120222023
Median Home Value$283,700$270,600$261,500$267,800$277,700$278,700$324,700$341,400$359,600$375,900$392,700$456,800$499,500
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS
Pie Chart & Table (ZIPs)

Gross Rent Paid

Less than $500:00.00%
$500 to $999:16310.26%
$1,000 to $1,499:49130.92%
$1,500 to $1,999:36022.67%
$2,000 to $2,499:17410.96%
$2,500 to $2,999:60.38%
$3,000 or more:805.04%
No Rent:31419.77%
Total:1,588100%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time (2011-2024)

Group2011210220132014201520162017201820192020202120222023
Median Rent$770$803$869$1,005$1,046$1,096$1,191$1,263$1,269$1,300$1,292$1,410$1,489
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS
Pie Chart & Table (ZIPs)

Housing Occupancy

Owner Occupied (with mortgage): 6,730 57.94%
Owner Occupied (free and clear, no mortgage): 3,298 28.39%
Renter Occupied: 1,588 13.67%
Total Occupied Housing Units: 11,616 100%
Occupied Housing Units: 11,616 67.55%
Vacant Housing Units (not graphed): 5,580 32.45%
Total Housing Units: 17,196 100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community

Pie Chart & Table (ZIPs)

Educational Attainment of Adults (25 and Older)

Less than 9th grade:3831.81%
9th to 12th grade, no diploma:7573.58%
High school graduate (includes equivalency):2,93113.85%
Some college, no degree:3,42516.19%
Associate's degree:1,6527.81%
Bachelor's degree:6,17029.16%
Graduate or professional degree:5,83827.60%
Total:21,156100%
High school graduate or higher:20,01694.61%
Bachelor's degree or higher:12,00856.76%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Pie Chart & Table (ZIPs)Comparison Chart

Health Insurance Coverage by Type (Private, Public, Uninsured)

Private Insurance:19,16562.80%
Public Insurance:9,44430.94%
No Insurance:1,9106.26%
Total:30,519100%
Has Health Insurance:28,60993.74%

All ZIP Codes assigned this City name by the USPS.

Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2024)

Group2011210220132014201520162017201820192020202120222023
% of People in Poverty10.9%9.5%9.9%9.2%8.1%6.5%5.2%3.1%4.8%4.2%4.6%4.9%4.7%
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

Pie Chart & Table (ZIPs)

School Enrollment by Education Level (Ages 3 and Older)

Nursery School, Preschool:51513.02%
Kindergarten:2055.18%
Elementary school (grades 1-8):1,47637.33%
High school (grades 9-12):72118.23%
College or graduate school:1,03726.23%
Total:3,954100%
Early Childhood:72018.21%
K-12 (Primary & Secondary School):2,40260.75%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics

Johns Island supports both business and residential activity. According to the Business Census (2024), there are 867 business establishments, employing about 8,468 people with an annual payroll of $403,707,000. USPS data shows 20,048 residential mailboxes and 716 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:20,048Source: USPS
# Business Mailboxes:716Source: USPS
Total Delivery Receptacles:27,940Source: USPS
Single Family Delivery Units:12,862Source: USPS
Multi Family Delivery Units:1,174Source: USPS
# of Businesses:867Source: CBP
1st Quarter Payroll:$93,418,000Source: CBP
Annual Payroll:$403,707,000Source: CBP
# of Employees:8,468Source: CBP

All ZIP Codes assigned this City name by the USPS.

Geography, Land Area, and Statistical Classifications

Johns Island, SC is located in Charleston County, within the Charleston-North Charleston, SC Metropolitan Statistical Area (CBSA 16700) and spans 2 of South Carolina's 1st and 6th Congressional Districts. This Metro area has a population of 817,756 people, about 3.5% of whom live in Johns Island. ZIP Codes here cover 100.242 sq mi of land and a water area of 9.929 sq mi.

CBSA Name:Charleston-North Charleston, SCSource: Census
CBSA Number:16700Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:817,756Source: Census
MSA:Charleston-North Charleston, SC MSASource: Census
PMSA:--Source: Census
Land Area:100.242 sq miSource: Census
Water Area:9.929 sq miSource: Census
Congressional District(s):01,06Source: USPS
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:--Source: Census
Place Name:--Source: Census

Sum of all ZIP Codes assigned this City name by the USPS.

Adjacent & Nearby Cities from Johns Island, SC

  1. Wadmalaw Island, SC ~5.5 miles
  2. Charleston, SC ~8.6 miles
  3. Hollywood, SC ~10.6 miles
  4. North Charleston, SC ~12.7 miles
  5. Ravenel, SC ~12.7 miles
  6. Charleston AFB, SC ~14.6 miles
  7. Edisto Island, SC ~15.3 miles
  8. Sullivans Island, SC ~15.4 miles
  9. Mount Pleasant, SC ~16.5 miles
  10. Adams Run, SC ~17.7 miles
  11. Hanahan, SC ~18.0 miles
  12. Summerville, SC ~18.7 miles
  13. Ladson, SC ~20.8 miles
  14. Isle Of Palms, SC ~21.2 miles
  15. Goose Creek, SC ~21.4 miles
  16. Green Pond, SC ~25.4 miles
  17. Ridgeville, SC ~28.2 miles
  18. Cottageville, SC ~28.8 miles
  19. Round O, SC ~29.3 miles
  20. Awendaw, SC ~29.6 miles

Sources & References

Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on March 1, 2026.

  1. U.S. Postal Service [Last Updated: 3/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 3/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 3/1/2026], https://nces.ed.gov