40 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 33810 | Lakeland | 52,734 |
| 33844 | Haines City | 49,133 |
| 33837 | Davenport | 45,144 |
| 33880 | Winter Haven | 42,336 |
| 34759 | Kissimmee | 41,381 |
| 33881 | Winter Haven | 39,189 |
| 33823 | Auburndale | 39,146 |
| 33813 | Lakeland | 38,112 |
| 33884 | Winter Haven | 36,395 |
| 33801 | Lakeland | 33,460 |
| 33830 | Bartow | 32,738 |
| 33809 | Lakeland | 30,498 |
| 33897 | Davenport | 29,206 |
| 33803 | Lakeland | 29,058 |
| 33811 | Lakeland | 28,456 |
| 33805 | Lakeland | 27,391 |
| 33860 | Mulberry | 25,617 |
| 33898 | Lake Wales | 18,426 |
| 33812 | Lakeland | 14,836 |
| 33815 | Lakeland | 14,457 |
| 33868 | Polk City | 13,676 |
| 33853 | Lake Wales | 12,385 |
| 33843 | Frostproof | 11,072 |
| 33859 | Lake Wales | 10,827 |
| 33850 | Lake Alfred | 9,825 |
| 33841 | Fort Meade | 8,268 |
| 33838 | Dundee | 5,431 |
| 33839 | Eagle Lake | 4,397 |
| 33827 | Babson Park | 2,438 |
| 33851 | Lake Hamilton | 1,109 |
| 33849 | Kathleen | 736 |
| 33858 | Loughman | 578 |
| 33854 | Lakeshore | 481 |
| 33847 | Homeland | 434 |
| 33856 | Nalcrest | 319 |
| 33877 | Waverly | 302 |
| 33835 | Bradley | 103 |
| 33867 | River Ranch | 64 |
| 33855 | Indian Lake Estates | 33 |
| 33840 | Eaton Park | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 40 ZCTAs in Polk County, Florida (US Census).