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ZIP codes in St. Lucie County

22 ZIPs touch St. Lucie County, Florida. The blue dashed line is the county border; orange ZIPs reach into it.

22

ZIP codes

3

cross the county line

429,474

people in these ZIPs

67

counties in FL

Most people

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St. Lucie County ZIP list

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Questions people actually ask

How many ZIP codes are in St. Lucie County, Florida?

22 ZIP codes reach into St. Lucie County, including 5 PO Box or single-address ZIPs placed by the town they serve. 3 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in St. Lucie County has the most people?

34953 (Port Saint Lucie) has about 86,875 residents, the most of any ZIP touching St. Lucie County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in St. Lucie 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 St. Lucie 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