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ZIP codes in Cayey Municipio

3 ZIPs touch Cayey Municipio, Puerto Rico. The blue dashed line is the county border; orange ZIPs reach into it.

3

ZIP codes

3

cross the county line

99,630

people in these ZIPs

78

counties in PR

Most people

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Cayey Municipio ZIP list

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Questions people actually ask

How many ZIP codes are in Cayey Municipio, Puerto Rico?

3 ZIP codes reach into Cayey Municipio. 3 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Cayey Municipio has the most people?

00736 (Cayey) has about 45,306 residents, the most of any ZIP touching Cayey Municipio, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Cayey Municipio 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 Cayey Municipio. 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