ZIP codes in Malheur County

14 ZIPs touch Malheur County, Oregon. The blue dashed line is the county border; orange ZIPs reach into it.

ZIP codes

cross the county line

32,825

people in these ZIPs

counties in OR

Most people

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Malheur County ZIP list

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All 36 counties in Oregon

Questions people actually ask

How many ZIP codes are in Malheur County, Oregon?

14 ZIP codes reach into Malheur County. 3 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Malheur County has the most people?

97914 (Ontario) has about 19,713 residents, the most of any ZIP touching Malheur County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Malheur 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 Malheur 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