ZIP code · Sea Island · Georgia · United States
ZIP code 31561 — Sea Island
ZIP code 31561 serves Sea Island, Georgia.
- Postal code
- 31561Single source Value from one source, not cross-checked.
- City
- Sea Island
- County
- Glynn
- State
- Georgia
- Country
- United States
- Coordinates
- 31.1989, -81.3322 — precision precise (locality)
View on OpenStreetMap - Population
- 94 (ZCTA, ACS 5-year)
- Median household income
- $144,375
- Median age
- 72.1
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · census-acs5. Data generated on 2026-08-21. Methodology · Report an error on this page