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
All states and U.S. territories
Maps and coordinates
County directory

Los Angeles County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Los Angeles County.

County State ZIP Code City Area Codes
Los Angeles County CA 91350 Santa Clarita 661
Los Angeles County CA 91351 Canyon Country 661
Los Angeles County CA 91352 Sun Valley 747, 818
Los Angeles County CA 91353 Sun Valley 818
Los Angeles County CA 91354 Valencia 661
Los Angeles County CA 91355 Valencia 661
Los Angeles County CA 91356 Tarzana 310, 424, 747, 818
Los Angeles County CA 91357 Tarzana 213
Los Angeles County CA 91359 Westlake Village 805, 820
Los Angeles County CA 91363 Thousand Oaks 818
Page 38 of 53

Geographic Map of Los Angeles County

Postal context

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.