ZIP codes in Martin County
17 ZIPs touch Martin County, Florida. The blue dashed line is the county border; orange ZIPs reach into it.
17
ZIP codes
7
cross the county line
269,328
people in these ZIPs
67
counties in FL
Most people
Martin County ZIP list
More counties in Florida
- Leon County21
- Levy County14
- Liberty County3
- Madison County6
- Manatee County32
- Marion County45
- Miami-Dade County128
- Monroe County14
- Nassau County8
- Okaloosa County20
- Okeechobee County2
- Orange County82
Questions people actually ask
How many ZIP codes are in Martin County, Florida?
17 ZIP codes reach into Martin County, including 5 PO Box or single-address ZIPs placed by the town they serve. 7 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Martin County has the most people?
33458 (Jupiter) has about 55,512 residents, the most of any ZIP touching Martin County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Martin 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 Martin 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