| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Jack | city | Louisiana | United States | 30.73806 | -90.71222 | 187 | 1418 |
| Jackson | city | Louisiana | United States | 30.83722 | -91.2175 | 147 | 2574 |
| Jackson Landing | city | Louisiana | United States | 32.34833 | -91.49972 | 72 | 836 |
| Jackson Park | city | Louisiana | United States | 30.55972 | -91.03583 | 59 | 18969 |
| Jackson Place | city | Louisiana | United States | 30.56694 | -91.04028 | 65 | 18969 |
| Jackson Road historical | city | Louisiana | United States | 30.71667 | -91.24417 | 121 | 4795 |
| Jacksonville historical | city | Louisiana | United States | 31.32389 | -92.99111 | 242 | 734 |
| Jacoby | city | Louisiana | United States | 30.915 | -91.78917 | 26 | 809 |
| Jamestown | city | Louisiana | United States | 32.34389 | -93.21167 | 219 | 1127 |
| Janie | city | Louisiana | United States | 31.4625 | -92.88639 | 144 | 536 |
| Jarreau | city | Louisiana | United States | 30.62056 | -91.45083 | 16 | 3021 |
| Jay | city | Louisiana | United States | 29.595 | -90.46833 | 3 | 2915 |
| Jean Lafitte | city | Louisiana | United States | 29.73583 | -90.12667 | 3 | 5202 |
| Jeanerette | city | Louisiana | United States | 29.91083 | -91.66333 | 13 | 1956 |
| Jefferson | city | Louisiana | United States | 29.96583 | -90.15306 | 13 | 236420 |
| Jefferson Heights | city | Louisiana | United States | 29.96361 | -90.165 | 9 | 236420 |
| Jefferson Island | city | Louisiana | United States | 29.9725 | -91.97556 | 13 | 5083 |
| Jefferson Place subdivision | city | Louisiana | United States | 30.4225 | -91.1125 | 49 | 128158 |
| Jefferson Shadows subdivision | city | Louisiana | United States | 30.41167 | -91.07444 | 32 | 84464 |
| Jefferson Terrace East subdivision | city | Louisiana | United States | 30.40361 | -91.06722 | 29 | 84464 |
| Jefferson Terrace subdivision | city | Louisiana | United States | 30.39722 | -91.07278 | 26 | 84464 |
| Jena | city | Louisiana | United States | 31.68306 | -92.13361 | 164 | 4418 |
| Jena historical | city | Louisiana | United States | 30.4125 | -90.43333 | 3 | 5864 |
| Jenkins | city | Louisiana | United States | 30.81194 | -90.13694 | 147 | 2107 |
| Jenkins Pryce Place subdivision | city | Louisiana | United States | 30.54083 | -91.16806 | 62 | 63886 |
| Jennings | city | Louisiana | United States | 30.22222 | -92.65694 | 22 | 12420 |
| Jericho | city | Louisiana | United States | 31.26722 | -92.86639 | 193 | 842 |
| Jesuit Bend | city | Louisiana | United States | 29.74806 | -90.02583 | 16 | 1460 |
| Jewella historical | city | Louisiana | United States | 32.46861 | -93.80611 | 229 | 76202 |
| Jigger | city | Louisiana | United States | 32.03472 | -91.74667 | 62 | 1533 |
| John historical | city | Louisiana | United States | 30.05194 | -91.71583 | 9 | 5197 |
| Johnson | city | Louisiana | United States | 29.69389 | -91.46222 | 3 | 831 |
| Johnson | city | Louisiana | United States | 30.01639 | -90.63472 | 6 | 5757 |
| Johnson Bayou Landing | city | Louisiana | United States | 29.80194 | -93.75278 | 3 | 334 |
| Johnson Landing | city | Louisiana | United States | 30.96722 | -92.43444 | 98 | 1054 |
| Johnson Ridge | city | Louisiana | United States | 29.76556 | -90.81611 | 9 | 25803 |
| Johnsons Bayou | city | Louisiana | United States | 29.76111 | -93.65833 | 3 | 281 |
| Jones | city | Louisiana | United States | 32.9675 | -91.64806 | 98 | 480 |
| Jones Creek | city | Louisiana | United States | 30.4125 | -91.01472 | 26 | 68941 |
| Jones Landing | city | Louisiana | United States | 31.8825 | -91.77833 | 45 | 1344 |
| Jonesboro | city | Louisiana | United States | 32.24111 | -92.71583 | 196 | 4096 |
| Jonesburg | city | Louisiana | United States | 32.525 | -91.75667 | 82 | 4221 |
| Jonesville | city | Louisiana | United States | 31.62639 | -91.81806 | 13 | 2643 |
| Jordan Hill | city | Louisiana | United States | 31.85389 | -92.5225 | 111 | 434 |
| Jordan Terrace subdivision | city | Louisiana | United States | 30.52833 | -91.17806 | 59 | 63886 |
| Joyce | city | Louisiana | United States | 31.93917 | -92.59861 | 104 | 6862 |
| Juanita | city | Louisiana | United States | 30.61833 | -93.425 | 98 | 807 |
| Judd | city | Louisiana | United States | 30.36278 | -92.40389 | 32 | 1911 |
| Judice | city | Louisiana | United States | 30.18111 | -92.14167 | 26 | 16155 |
| Julia historical | city | Louisiana | United States | 30.71806 | -90.03861 | 98 | 2145 |
| Julien | city | Louisiana | United States | 29.85722 | -91.63222 | 9 | 1490 |
| Junction | city | Louisiana | United States | 30.83778 | -93.50889 | 104 | 653 |
| Junction City | city | Louisiana | United States | 33.01361 | -92.725 | 196 | 903 |
| Justina | city | Louisiana | United States | 31.97722 | -91.42944 | 52 | 218 |