14 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 34953 | Port Saint Lucie | 86,875 |
| 34983 | Port Saint Lucie | 49,001 |
| 34952 | Port Saint Lucie | 42,655 |
| 34982 | Fort Pierce | 31,143 |
| 34986 | Port Saint Lucie | 30,715 |
| 34987 | Port Saint Lucie | 21,727 |
| 34984 | Port Saint Lucie | 20,151 |
| 34950 | Fort Pierce | 17,461 |
| 34951 | Fort Pierce | 17,148 |
| 34947 | Fort Pierce | 12,804 |
| 34949 | Fort Pierce | 7,470 |
| 34946 | Fort Pierce | 6,852 |
| 34945 | Fort Pierce | 6,321 |
| 34981 | Fort Pierce | 5,031 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in St. Lucie County, Florida (US Census).