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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State directory

California ZIP Codes

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

State	ZIP Code	City	County	Area Codes
CA	95925	Challenge	Yuba County	`530`
CA	95926	Chico	Butte County	`530`
CA	95927	Chico	Butte County	`530`
CA	95928	Chico	Butte County	`530`
CA	95929	Chico	Butte County	`530`
CA	95930	Clipper Mills	Butte County	`530`
CA	95932	Colusa	Colusa County	`530`
CA	95934	Crescent Mills	Plumas County	`530`
CA	95935	Dobbins	Yuba County	`530`
CA	95936	Downieville	Sierra County	`530`

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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.