ZIP Code 31561

31561 is one of Georgia's ZIP codes, delivering to addresses in Sea Island, Glynn County.

City: Sea Island
County: Glynn County
State: Georgia
Prefix: 315xx

Where this code sits

31561 is part of the 315xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sea Island.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 31561 delivers to without sharing its boundary.

912 Area code 912

ZIP codes nearest 31561

The ZIP codes whose reference points sit closest to 31561.
ZIP code	Distance	Delivers to
ZIP code 31522	2.4 mi	Saint Simons Island, GA
ZIP code 31524	9.0 mi	Brunswick, GA
ZIP code 31520	9.7 mi	Brunswick, GA
ZIP code 31527	9.9 mi	Jekyll Island, GA
ZIP code 31521	10 mi	Brunswick, GA
ZIP code 31523	13 mi	Brunswick, GA
ZIP code 31525	13 mi	Brunswick, GA
ZIP code 31305	14 mi	Darien, GA

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 31561, plotted from its record coordinates.

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

Scope ZIP code 31561. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.