Johns Island, SC ZIP codes
Johns Island, South Carolina has 2 ZIP codes, including 1 PO Box ZIP. They are in Charleston County.
- Population in these ZIPs
- 27,576
- Avg. median income
- $121,400population-weighted
- Typical home value
- $746,500population-weighted
- Metro area
- Charleston-North Charleston, SC
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Johns Island, SC ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 29455 | Charleston County | 27,576 | $121,372 | $746,500 |
| 29457 PO Box | Charleston County | — | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Johns Island
- Wadmalaw Island 7 mi
- Ravenel 8 mi
- Folly Beach 10 mi
- North Charleston 11 mi
- Hollywood 11 mi
- Charleston Afb 11 mi
- Charleston 11 mi
- Hanahan 15 mi
- Sullivans Island 16 mi
- Adams Run 16 mi
- Mount Pleasant 17 mi
- Ladson 17 mi
Frequently asked questions
What county is Johns Island, South Carolina in?
Johns Island ZIP codes are in Charleston County.
Which Johns Island ZIP codes are PO Boxes?
29457 is a PO Box or single-organization ZIP code; it has no residential delivery area.