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ZIP codes in Rio Arriba County

37 ZIPs touch Rio Arriba County, New Mexico. The blue dashed line is the county border; orange ZIPs reach into it.

37

ZIP codes

12

cross the county line

55,345

people in these ZIPs

33

counties in NM

Most people

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Rio Arriba County ZIP list

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Questions people actually ask

How many ZIP codes are in Rio Arriba County, New Mexico?

37 ZIP codes reach into Rio Arriba County, including 1 PO Box or single-address ZIPs placed by the town they serve. 12 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Rio Arriba County has the most people?

87532 (Espanola) has about 18,948 residents, the most of any ZIP touching Rio Arriba County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Rio Arriba 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 Rio Arriba 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