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.

42,735 verified records
All states and U.S. territories
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California ZIP Codes

Complete postal directory, details, and geographic map for the State of California.

State ZIP Code City County Area Codes
CA 90734 San Pedro Los Angeles County 213
CA 90740 Seal Beach Orange County 562, 657, 714
CA 90742 Sunset Beach Orange County 562, 657, 714
CA 90743 Surfside Orange County 562
CA 90744 Wilmington Los Angeles County 310, 424, 562
CA 90745 Carson Los Angeles County 310, 424
CA 90746 Carson Los Angeles County 310, 424
CA 90747 Carson Los Angeles County 310, 424
CA 90748 Wilmington Los Angeles County 213
CA 90749 Carson Los Angeles County 310
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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.