| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Jackson Bluff | city | Florida | United States | 30.38889 | -84.64194 | 88 | 1343 |
| Jacksonville | city | Florida | United States | 30.33194 | -81.65583 | 22 | 138082 |
| Jacksonville Beach | city | Florida | United States | 30.29444 | -81.39333 | 3 | 52162 |
| Jacksonville Heights | city | Florida | United States | 30.25194 | -81.78611 | 75 | 100148 |
| Jacobs | city | Florida | United States | 30.89472 | -85.39778 | 124 | 1364 |
| Jamestown | city | Florida | United States | 28.63056 | -81.24056 | 49 | 60246 |
| Jamieson | city | Florida | United States | 30.6625 | -84.45056 | 196 | 5127 |
| Jan-Phyl Village | city | Florida | United States | 28.01444 | -81.77194 | 154 | 53964 |
| Jarrott | city | Florida | United States | 30.62361 | -83.93417 | 196 | 1659 |
| Jasmine Estates | city | Florida | United States | 28.29278 | -82.69028 | 16 | 81727 |
| Jasper | city | Florida | United States | 30.51806 | -82.94833 | 144 | 1344 |
| Jay | city | Florida | United States | 30.95278 | -87.15139 | 278 | 1658 |
| Jay Jay | city | Florida | United States | 28.64556 | -80.82 | 0 | 30088 |
| Jena | city | Florida | United States | 29.66333 | -83.37028 | 6 | 428 |
| Jenada Isles | city | Florida | United States | 26.16306 | -80.1575 | 9 | 256100 |
| Jennings | city | Florida | United States | 30.60389 | -83.09806 | 108 | 1099 |
| Jensen Beach | city | Florida | United States | 27.25417 | -80.23 | 9 | 25929 |
| Jensen Place | city | Florida | United States | 30.23 | -84.92694 | 78 | 566 |
| Jerome | city | Florida | United States | 25.99694 | -81.34694 | 9 | 168 |
| Jessamine | city | Florida | United States | 28.41333 | -82.27028 | 160 | 6227 |
| Jessie Willies | city | Florida | United States | 26.01889 | -80.7125 | 9 | 48 |
| Jewfish | city | Florida | United States | 25.18333 | -80.38833 | 3 | 4659 |
| Joels Landing | city | Florida | United States | 30.55167 | -81.66889 | 9 | 3349 |
| Johns Ferry | city | Florida | United States | 29.43167 | -81.66389 | 3 | 2608 |
| Johnson | city | Florida | United States | 29.58444 | -81.97333 | 95 | 2949 |
| Johnson | city | Florida | United States | 28.13389 | -81.46667 | 59 | 7222 |
| Johnson Crossroad | city | Florida | United States | 30.72944 | -85.66361 | 114 | 3009 |
| Johnsons Beach | city | Florida | United States | 30.30222 | -87.41278 | 0 | 5664 |
| Johnsons Corner | city | Florida | United States | 28.97556 | -81.54194 | 82 | 3006 |
| Johnstown | city | Florida | United States | 30.04417 | -82.27222 | 137 | 2623 |
| Jolly Corner | city | Florida | United States | 28.00389 | -82.29028 | 72 | 36837 |
| Jones Corner | city | Florida | United States | 28.03306 | -81.81444 | 124 | 34026 |
| Jones Landing | city | Florida | United States | 28.70417 | -81.20639 | 3 | 21540 |
| Jonesboro | city | Florida | United States | 29.71083 | -83.29722 | 26 | 841 |
| Jonesville | city | Florida | United States | 29.65389 | -82.52333 | 82 | 6990 |
| Joshua | city | Florida | United States | 27.2075 | -81.73333 | 68 | 817 |
| Jumeau | city | Florida | United States | 28.72889 | -82.30167 | 59 | 8888 |
| June Park | city | Florida | United States | 28.07194 | -80.68028 | 29 | 53277 |
| Juniper | city | Florida | United States | 30.5425 | -84.75333 | 219 | 2647 |
| Juno Beach | city | Florida | United States | 26.87944 | -80.05361 | 0 | 44764 |
| Juno Isles | city | Florida | United States | 26.86333 | -80.06111 | 16 | 66591 |
| Juno Ridge | city | Florida | United States | 26.84778 | -80.0625 | 3 | 66591 |
| Jupiter | city | Florida | United States | 26.93389 | -80.09444 | 9 | 49189 |
| Jupiter Inlet Beach Colony | city | Florida | United States | 26.94861 | -80.075 | 3 | 37047 |
| Jupiter Island | city | Florida | United States | 27.03111 | -80.10167 | 3 | 15455 |
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