Residential delivery area · South Carolina
ZIP Code 29455: Johns Island, SC
ZIP code 29455 uses the postal name Johns Island, South Carolina and lies entirely in Charleston County (Census 2020 ZIP-county file). About 28,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $121,372 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Charleston (15%), Kiawah Island (11%) and Seabrook Island (6%); 67% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Johns Island · its only residential ZIP
- County
- Charleston County
- Census places
- Charleston (15%); Kiawah Island (11%); Seabrook Island (6%)
- Metro area
- Charleston-North Charleston, SC
- House districts
- SC-1 (94%), SC-6 (6%) 119th Congress, by share of land
- State
- South Carolina
- Time zone
- Eastern
- Land area
- 100.2 sq mi · 275 people per sq mi
- PO Box ZIPs
- 29457 also use the name Johns Island
Where is ZIP code 29455?
29455 centers on 32.684°, -80.092° and covers 100.2 square miles of land plus 9.9 of water. It borders 6 ZIP codes: 29487, 29412, 29407, 29414, 29449, 29470.
The map draws ZIP code areas only. For the streets inside 29455, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 29455 compare with the rest of Charleston County?
| Measure | 29455 | In Charleston County | In SC |
|---|---|---|---|
| People (ACS 2020-2024) | 27,576 | 9th of 29 | 66th of 424 |
| Median household income | $121k | 3rd of 20 | 4th of 265 |
| Median home value | $591k | 9th of 21 | 13th of 260 |
Its median household income is higher than in 91% of U.S. residential ZIP codes, and it is denser than 66% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 29455?
The 2020 Census counted 28,344 people in 29455; the ACS, which samples households over 2020-2024, estimates 27,576. Between the 2010 and 2020 censuses its population grew 38.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 27,576
- 2020 Census count
- 28,344+38.4% since 2010 (20,478)
- Households
- 12,249
- Median age
- 49.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 29455?
Of the 27,576 people the ACS estimates in 29455, 15.2% are under 18 and 25.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (75.6%), then Black (not Hispanic) (12.3%).
- Under 1815.2%
- 18 to 6459.1%
- 65 and older25.7%
- White, not Hispanic75.6%
- Black, not Hispanic12.3%
- Hispanic or Latino7.3%
- Other or two or more4.7%
- Asian, not Hispanic0.1%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 29455 earn?
Median household income is $121,372 (ACS 2020-2024), the 3rd highest of the 20 ranked ZIP codes in Charleston County. It rose from $97,094 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $121,372
- Income per person
- $80,015
- Below the poverty line
- 9.0%
- Unemployed (of the labor force)
- 1.5%
- Adults 25+ with a bachelor's degree
- 59.5%
- Adjusted gross income per tax return, 2022
- $184,37516,340 returns; wages 47% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 29455?
FHFA's house price index for 29455, built from repeat sales and appraisals of the same homes, rose 120% from 2015 to 2025 and rose 68% from 2020 to 2025, and moved −1.5% in 2025.
- Median home value (owners' estimate)
- $590,800
- Median gross rent
- $1,567
- Homes owned by their occupants
- 88.2%
- Housing units
- 17,781
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 29455?
861 business establishments had a location in this ZIP code in 2023, 201 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction171
- Professional, scientific, and technical services114
- Retail trade98
- Other services (except public administration)79
- Accommodation and food services74
- Administrative and support and waste management and remediation services69
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 29455?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 29487 | Wadmalaw Island | 2,703 | $106k | 5.7 mi |
| 29412 | Charleston | 39,256 | $102k | 8.4 mi |
| 29407 | Charleston | 36,706 | $85k | 9.6 mi |
| 29414 | Charleston | 44,727 | $100k | 11.0 mi |
| 29449 | Hollywood | 8,024 | $57k | 11.0 mi |
| 29470 | Ravenel | 5,639 | $86k | 11.3 mi |
| 29439 | Folly Beach | 1,125 | $137k | 8.1 mi (near) |
| 29409 | Charleston | 2,056 | – | 10.9 mi (near) |
| 29425 | Charleston | 0 | – | 10.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Johns Island?
1 more ZIP code carries the postal name Johns Island, SC without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 29457 | Charleston County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.