U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Palm Beach County ZIP Codes

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

County State ZIP Code City Area Codes
Palm Beach County FL 33421 Royal Palm Beach 561
Palm Beach County FL 33422 West Palm Beach 561
Palm Beach County FL 33424 Boynton Beach 561
Palm Beach County FL 33425 Boynton Beach 561
Palm Beach County FL 33426 Boynton Beach 561
Palm Beach County FL 33427 Boca Raton 561
Palm Beach County FL 33428 Boca Raton 561, 754, 954
Palm Beach County FL 33429 Boca Raton 561
Palm Beach County FL 33430 Belle Glade 561
Palm Beach County FL 33431 Boca Raton 561
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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.