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 95037 Morgan Hill Santa Clara County 408, 669, 831
CA 95038 Morgan Hill Santa Clara County 408
CA 95039 Moss Landing Monterey County 831
CA 95041 Mount Hermon Santa Cruz County 831
CA 95042 New Almaden Santa Clara County 408
CA 95043 Paicines San Benito County 559, 805, 820, 831
CA 95044 Redwood Estates Santa Clara County 408, 669
CA 95045 San Juan Bautista San Benito County 408, 669, 831
CA 95046 San Martin Santa Clara County 408, 669
CA 95050 Santa Clara Santa Clara County 408, 669
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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.