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U.S. ZIP Codes Database 2026

Name: Glynn County
Address: US

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Glynn County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Glynn County.

County	State	ZIP Code	City	Area Codes
Glynn County	GA	31520	Brunswick	`912`
Glynn County	GA	31521	Brunswick	`912`
Glynn County	GA	31522	Saint Simons Island	`912`
Glynn County	GA	31523	Brunswick	`912`
Glynn County	GA	31524	Brunswick	`912`
Glynn County	GA	31525	Brunswick	`912`
Glynn County	GA	31527	Jekyll Island	`912`
Glynn County	GA	31561	Sea Island	`912`

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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.