14 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 34953 | Port Saint Lucie | 82,469 |
| 34983 | Port Saint Lucie | 47,983 |
| 34952 | Port Saint Lucie | 41,679 |
| 34986 | Port Saint Lucie | 29,713 |
| 34982 | Fort Pierce | 27,447 |
| 34984 | Port Saint Lucie | 19,207 |
| 34987 | Port Saint Lucie | 17,911 |
| 34950 | Fort Pierce | 17,674 |
| 34951 | Fort Pierce | 16,871 |
| 34947 | Fort Pierce | 13,192 |
| 34949 | Fort Pierce | 7,567 |
| 34946 | Fort Pierce | 6,588 |
| 34945 | Fort Pierce | 6,214 |
| 34981 | Fort Pierce | 6,167 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 14 ZCTAs in St. Lucie County, Florida (US Census).