38 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lakeland | 1 | 127,848 | 113,888 | 2.23% | 1,921 | 66.56 | City |
| Poinciana | 2 | 73,341 | 68,280 | 1.87% | 1,021 | 71.87 | CDP |
| Winter Haven | 3 | 61,431 | 50,625 | 3.65% | 1,865 | 32.94 | City |
| Haines City | 4 | 43,487 | 27,949 | 7.7% | 1,843 | 23.60 | City |
| Auburndale | 5 | 22,854 | 15,746 | 6.63% | 1,686 | 13.56 | City |
| Bartow | 6 | 21,285 | 19,532 | 1.68% | 458 | 46.48 | City |
| Davenport | 7 | 18,632 | 9,721 | 10.58% | 4,236 | 4.40 | City |
| Lake Wales | 8 | 16,941 | 16,291 | 0.77% | 893 | 18.98 | City |
| Highland City | 9 | 12,861 | 11,392 | 1.06% | 1,631 | 7.88 | CDP |
| Medulla | 10 | 11,971 | 11,336 | 1.74% | 2,138 | 5.60 | CDP |
| Lakeland Highlands | 11 | 11,331 | 11,575 | 0.16% | 2,330 | 4.86 | CDP |
| Cypress Gardens | 12 | 9,886 | 10,040 | 0.66% | 2,866 | 3.45 | CDP |
| Lake Alfred | 13 | 7,897 | 6,542 | 3.55% | 803 | 9.83 | City |
| Inwood | 14 | 7,217 | 7,196 | 0.77% | 3,823 | 1.89 | CDP |
| Loughman | 15 | 7,200 | 6,762 | 4.36% | 2,073 | 3.47 | CDP |
| Willow Oak | 16 | 6,923 | 7,168 | 0.19% | 2,220 | 3.12 | CDP |
| Dundee | 17 | 6,557 | 5,271 | 4.08% | 593 | 11.05 | Town |
| Jan Phyl Village | 18 | 6,403 | 6,195 | 0.87% | 1,400 | 4.57 | CDP |
| Crystal Lake | 19 | 6,182 | 6,211 | 0.73% | 2,421 | 2.55 | CDP |
| Kathleen | 20 | 5,721 | 6,402 | -0.71% | 795 | 7.19 | CDP |
| Fort Meade | 21 | 5,383 | 5,100 | 1.07% | 658 | 8.18 | City |
| Fussels Corner | 22 | 4,915 | 4,780 | -0.87% | 914 | 5.38 | CDP |
| Eagle Lake | 23 | 4,907 | 3,062 | 8.13% | 1,889 | 2.60 | City |
| Combee Settlement | 24 | 4,706 | 6,173 | -1.22% | 2,382 | 1.98 | CDP |
| Mulberry | 25 | 4,600 | 3,964 | 2.84% | 677 | 6.80 | City |
| Wahneta | 26 | 4,235 | 3,988 | -1.33% | 1,862 | 2.27 | CDP |
| Frostproof | 27 | 3,510 | 3,217 | 1.71% | 308 | 11.41 | City |
| Grenelefe | 28 | 3,306 | 3,073 | 3.25% | 778 | 4.25 | CDP |
| Alturas | 29 | 3,279 | 3,778 | -1.8% | 61 | 54 | CDP |
| Polk City | 30 | 3,204 | 2,764 | 2.82% | 711 | 4.50 | Town |
| Crooked Lake Park | 31 | 2,158 | 1,591 | 1.36% | 3,141 | 0.69 | CDP |
| Lake Hamilton | 32 | 1,703 | 1,552 | 1.79% | 546 | 3.12 | Town |
| Babson Park | 33 | 1,000 | 1,451 | -2.34% | 656 | 1.52 | CDP |
| Indian Lake Estates | 34 | 840 | 686 | 7.14% | 77 | 10.85 | CDP |
| Bradley Junction | 35 | 757 | 702 | 0.66% | 359 | 2.11 | CDP |
| Hillcrest Heights | 36 | 290 | 250 | 2.84% | 1,813 | 0.16 | Town |
| Homeland | 37 | 251 | 231 | -3.09% | 591 | 0.42 | CDP |
| Waverly | 38 | 144 | 734 | -22.58% | 100 | 1.44 | CDP |
Lakeland is the largest city in Polk County, with a population of 127,848.
Waverly is the smallest city in Polk County.
There are 38 cities in Polk County, Florida.