Every ZIP code in Glynn County

315xx

The complete list of Glynn County, GA ZIP codes with the city each one delivers to.
ZIP code	City
31520	Brunswick
31521	Brunswick
31522	Saint Simons Island
31523	Brunswick
31524	Brunswick
31525	Brunswick
31527	Jekyll Island
31561	Sea Island

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Glynn County codes above are listed without a column we would have to invent.

Cities and towns in Glynn County

A further 3 places in Glynn County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Glynn County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Glynn County's ZIP codes sit

Each point is the reference point of one Glynn County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope every ZIP code recorded in Glynn County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.