| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Iatt | city | Louisiana | United States | 31.69 | -92.71 | 147 | |
| Iberia Mobile Home Park | city | Louisiana | United States | 29.99 | -91.80 | 13 | |
| Iberville | city | Louisiana | United States | 30.30 | -91.12 | 19 | |
| Iberville Terrace | city | Louisiana | United States | 30.37 | -91.09 | 29 | |
| Ida | city | Louisiana | United States | 33.00 | -93.89 | 249 | |
| Idlewild | city | Louisiana | United States | 29.64 | -90.76 | 6 | |
| Idlewild | city | Louisiana | United States | 29.68 | -91.29 | 3 | |
| Idlewood | city | Louisiana | United States | 30.03 | -89.96 | 3 | |
| Ikes | city | Louisiana | United States | 30.87 | -93.22 | 137 | |
| Illinois Plant | city | Louisiana | United States | 30.04 | -92.91 | 3 | |
| Immaculata | city | Louisiana | United States | 30.72 | -91.97 | 26 | |
| Independence | city | Louisiana | United States | 30.64 | -90.50 | 82 | |
| Independence Place | city | Louisiana | United States | 30.43 | -91.08 | 36 | |
| Independent | city | Louisiana | United States | 30.03 | -91.85 | 19 | |
| Indian Bayou | city | Louisiana | United States | 30.13 | -92.24 | 19 | |
| Indian Beach | city | Louisiana | United States | 30.02 | -90.14 | 3 | |
| Indian Hill Mobile Home Park | city | Louisiana | United States | 30.34 | -92.03 | 39 | |
| Indian Hills Estates | city | Louisiana | United States | 32.60 | -93.86 | 272 | |
| Indian Lake Estates | city | Louisiana | United States | 32.55 | -92.24 | 190 | |
| Indian Landing | city | Louisiana | United States | 32.28 | -91.52 | 72 | |
| Indian Park | city | Louisiana | United States | 30.36 | -91.13 | 19 | |
| Indian Village | city | Louisiana | United States | 30.45 | -92.97 | 26 | |
| Indian Village | city | Louisiana | United States | 32.47 | -92.41 | 196 | |
| Indian Village | city | Louisiana | United States | 30.26 | -91.31 | 3 | |
| Ingleside | city | Louisiana | United States | 30.60 | -91.43 | 22 | |
| Ingleside | city | Louisiana | United States | 29.90 | -90.99 | 3 | |
| Inglewood | city | Louisiana | United States | 31.23 | -92.42 | 68 | |
| Innis | city | Louisiana | United States | 30.88 | -91.68 | 29 | |
| Inniswold | city | Louisiana | United States | 30.40 | -91.08 | 29 | |
| Inniswold Estates | city | Louisiana | United States | 30.40 | -91.09 | 22 | |
| Insco (historical) | city | Louisiana | United States | 30.64 | -93.25 | 104 | |
| Intersection Connection Mobile Home Park | city | Louisiana | United States | 30.46 | -90.48 | 19 | |
| Interstate 10 Mobile Village | city | Louisiana | United States | 30.25 | -93.08 | 16 | |
| Intracoastal City | city | Louisiana | United States | 29.78 | -92.16 | 3 | |
| Invincible | city | Louisiana | United States | 32.79 | -93.41 | 226 | |
| Iota | city | Louisiana | United States | 30.33 | -92.50 | 26 | |
| Iowa | city | Louisiana | United States | 30.24 | -93.01 | 22 | |
| Irene | city | Louisiana | United States | 30.61 | -91.23 | 59 | |
| Irish Bend | city | Louisiana | United States | 29.82 | -91.45 | 9 | |
| Irma | city | Louisiana | United States | 31.80 | -93.01 | 108 | |
| Ironton | city | Louisiana | United States | 29.65 | -89.96 | 3 | |
| Irvings (historical) | city | Louisiana | United States | 30.87 | -89.84 | 111 | |
| Isabel | city | Louisiana | United States | 30.67 | -90.00 | 91 | |
| Island | city | Louisiana | United States | 30.68 | -91.39 | 22 | |
| Isle Labbe | city | Louisiana | United States | 30.17 | -91.78 | 13 | |
| Isle of Cuba | city | Louisiana | United States | 29.72 | -90.82 | 6 | |
| Islington (historical) | city | Louisiana | United States | 32.33 | -91.18 | 72 | |
| Istrouma | city | Louisiana | United States | 30.48 | -91.16 | 59 | |
| Ithra | city | Louisiana | United States | 30.46 | -91.27 | 13 | |
| Ivan | city | Louisiana | United States | 32.79 | -93.54 | 229 | |
| Ivanhoe | city | Louisiana | United States | 29.78 | -91.74 | 6 |