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ZIP codes in Ventura County

53 ZIPs touch Ventura County, California. The blue dashed line is the county border; orange ZIPs reach into it.

53

ZIP codes

9

cross the county line

999,442

people in these ZIPs

58

counties in CA

Most people

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Ventura County ZIP list

More counties in California

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Questions people actually ask

How many ZIP codes are in Ventura County, California?

53 ZIP codes reach into Ventura County, including 19 PO Box or single-address ZIPs placed by the town they serve. 9 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Ventura County has the most people?

93033 (Oxnard) has about 78,737 residents, the most of any ZIP touching Ventura County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Ventura 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 Ventura 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