US States Zip Codes Directory 2026

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We have 42735 Records of U.S Zip Codes from all over the United States!

California Zip Codes



California California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third most extensive (after Alaska and Texas). It is home to the nation s second and sixth largest census statistical areas (Los Angeles Metropolitan Area and San Francisco Bay Area, respectively), and eight of the nation s fifty most populated cities (Los Angeles, San Diego, San Jose, San Francisco, Fresno, Sacramento, Long Beach and Oakland). The capital city is Sacramento.

California s diverse geography ranges from the Pacific Coast in the west, to the Sierra Nevada mountains in the east from the Redwood Douglas fir forests of the northwest, to the Mojave Desert areas in the southeast. The center of the state is dominated by Central Valley, a major agricultural area. California contains both the highest and lowest points in the contiguous United States (Mount Whitney and Death Valley), and has the third-longest coastline of all states (after Alaska and Florida). Earthquakes are a common occurrence due to the state s location along the Pacific Ring of Fire: about 37,000 are recorded annually.

State Zip Code City County Area Codes
CA 91754 Monterey Park Los Angeles County 213, 323, 626
CA 91755 Monterey Park Los Angeles County 213, 323, 626
CA 91756 Monterey Park Los Angeles County 626
CA 91758 Ontario San Bernardino County 951, 909
CA 91759 Mt Baldy San Bernardino County 626, 661, 840, 909
CA 91761 Ontario San Bernardino County 840, 909, 951
CA 91762 Ontario San Bernardino County 840, 909
CA 91763 Montclair San Bernardino County 840, 909
CA 91764 Ontario San Bernardino County 840, 909
CA 91765 Diamond Bar Los Angeles County 562, 657, 714, 840, 909
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Map of California


ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired.


ZIP codes designate only delivery points within the United States and its dependencies, as well as locations of its armed forces. There are no ZIP codes reserved for designating mail bound for foreign destinations (with the exception of U.S. military units stationed outside of the United States), and therefore, international outbound mail should not include a ZIP code in the delivery address. The last line of a foreign address must only show the name of the country of destination.