ZIP codes in San Juan Municipio

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

ZIP codes

cross the county line

535,507

people in these ZIPs

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San Juan Municipio ZIP list

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Questions people actually ask

How many ZIP codes are in San Juan Municipio, Puerto Rico?

21 ZIP codes reach into San Juan Municipio. 6 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in San Juan Municipio has the most people?

00926 (San Juan) has about 92,284 residents, the most of any ZIP touching San Juan Municipio, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in San Juan 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 San Juan 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