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ZIP codes in Los Angeles County

519 ZIPs touch Los Angeles County, California. The blue dashed line is the county border; orange ZIPs reach into it.

519

ZIP codes

19

cross the county line

10,120,684

people in these ZIPs

58

counties in CA

Most people

← All California ZIP codes

Los Angeles County ZIP list

More counties in California

All 58 counties in California

Questions people actually ask

How many ZIP codes are in Los Angeles County, California?

519 ZIP codes reach into Los Angeles County, including 215 PO Box or single-address ZIPs placed by the town they serve. 19 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Los Angeles County has the most people?

90011 (Los Angeles) has about 100,113 residents, the most of any ZIP touching Los Angeles County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Los Angeles County and another county?

Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Los Angeles County. For one address, pin the exact spot on the ZIP finder to see its county.

Where does this list come from?

ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.

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Updated 2026-11-10 · Where the data comes from