| Zip Code | City | Population ↓ |
|---|---|---|
| 34698 | Dunedin | 38,171 |
| 34683 | Palm Harbor | 33,911 |
| 33710 | Saint Petersburg | 33,796 |
| 33756 | Clearwater | 32,201 |
| 33713 | Saint Petersburg | 31,729 |
| 33702 | Saint Petersburg | 31,294 |
| 33781 | Pinellas Park | 28,072 |
| 33705 | Saint Petersburg | 27,939 |
| 33771 | Largo | 27,596 |
| 33755 | Clearwater | 27,476 |
| 34689 | Tarpon Springs | 27,324 |
| 33764 | Clearwater | 27,311 |
| 33712 | Saint Petersburg | 27,142 |
| 34684 | Palm Harbor | 27,029 |
| 33770 | Largo | 25,368 |
| 33703 | Saint Petersburg | 25,264 |
| 33709 | Saint Petersburg | 25,050 |
| 33707 | Saint Petersburg | 24,324 |
| 33772 | Seminole | 23,733 |
| 34677 | Oldsmar | 22,762 |
| 33782 | Pinellas Park | 22,461 |
| 33763 | Clearwater | 21,146 |
| 33760 | Clearwater | 20,501 |
| 33711 | Saint Petersburg | 20,013 |
| 33774 | Largo | 19,799 |
| 33716 | Saint Petersburg | 19,328 |
| 33714 | Saint Petersburg | 19,227 |
| 33701 | Saint Petersburg | 18,823 |
| 33777 | Seminole | 18,582 |
| 33761 | Clearwater | 18,290 |
| 34685 | Palm Harbor | 18,132 |
| 34695 | Safety Harbor | 18,098 |
| 33759 | Clearwater | 17,557 |
| 33778 | Largo | 16,807 |
| 33773 | Largo | 16,741 |
| 33704 | Saint Petersburg | 16,232 |
| 33706 | Saint Petersburg | 15,298 |
| 33708 | Saint Petersburg | 15,060 |
| 33765 | Clearwater | 13,808 |
| 33776 | Seminole | 12,556 |
| 34688 | Tarpon Springs | 8,522 |
| 33767 | Clearwater Beach | 8,081 |
| 33715 | Saint Petersburg | 8,032 |
| 33762 | Clearwater | 5,063 |
| 33785 | Indian Rocks Beach | 4,907 |
| 33786 | Belleair Beach | 1,582 |
| 34681 | Crystal Beach | 1,284 |
| 33744 | Bay Pines | 59 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 48 ZCTAs in Pinellas County, Florida (US Census).