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
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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 91708 Chino San Bernardino County 840, 909, 951
CA 91709 Chino Hills San Bernardino County 657, 714, 840, 909, 951
CA 91710 Chino San Bernardino County 840, 909, 951
CA 91711 Claremont Los Angeles County 840, 909
CA 91714 City Of Industry Los Angeles County 626
CA 91715 City Of Industry Los Angeles County 626
CA 91716 City Of Industry Los Angeles County 626
CA 91722 Covina Los Angeles County 626
CA 91723 Covina Los Angeles County 626
CA 91724 Covina Los Angeles County 626, 840, 909
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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.