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U.S. ZIP Codes Database 2026

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Guaynabo Municipio ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Guaynabo Municipio.

County State ZIP Code City Area Codes
Guaynabo Municipio PR 00934 Fort Buchanan 787, 939
Guaynabo Municipio PR 00965 Guaynabo 787, 939
Guaynabo Municipio PR 00966 Guaynabo 787, 939
Guaynabo Municipio PR 00968 Guaynabo 787, 939
Guaynabo Municipio PR 00969 Guaynabo 787, 939
Guaynabo Municipio PR 00971 Guaynabo 787, 939

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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.