Guaynabo, PR is a city located in Guaynabo County, Puerto Rico and has a land area of 24.95 square miles (64.62 km2). The water area for the city is 0.18 square miles or 0.47 km2. There are 6 total unique zip codes in Guaynabo, Puerto Rico. The area code(s) for Guaynabo is 787.
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