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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California ZIP Codes

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

State ZIP Code City County Area Codes
CA 93558 Red Mountain San Bernardino County 442, 760
CA 93560 Rosamond Kern County 661
CA 93561 Tehachapi Kern County 661
CA 93562 Trona San Bernardino County 442, 760
CA 93563 Valyermo Los Angeles County 661
CA 93581 Tehachapi Kern County 661
CA 93584 Lancaster Los Angeles County 661
CA 93586 Lancaster Los Angeles County 661
CA 93590 Palmdale Los Angeles County 661
CA 93591 Palmdale Los Angeles County 442, 661, 760
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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.