| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ihrie (historical) | city | Mississippi | United States | 31.78 | -91.22 | 82 | |
| Imperial Mobile Estates | city | Mississippi | United States | 30.44 | -88.95 | 49 | |
| Improve | city | Mississippi | United States | 31.34 | -89.70 | 360 | |
| Increase | city | Mississippi | United States | 32.26 | -88.56 | 393 | |
| Independence | city | Mississippi | United States | 32.28 | -89.66 | 400 | |
| Independence | city | Mississippi | United States | 34.71 | -89.81 | 328 | |
| India | city | Mississippi | United States | 30.82 | -89.11 | 200 | |
| Indian Hills | city | Mississippi | United States | 34.32 | -88.68 | 298 | |
| Indian Springs | city | Mississippi | United States | 34.84 | -88.41 | 830 | |
| Indian Springs | city | Mississippi | United States | 31.30 | -89.14 | 209 | |
| Indianola | city | Mississippi | United States | 33.45 | -90.66 | 118 | |
| Industrial | city | Mississippi | United States | 30.58 | -89.76 | 49 | |
| Ingleside | city | Mississippi | United States | 32.04 | -90.98 | 223 | |
| Ingomar | city | Mississippi | United States | 34.41 | -89.04 | 377 | |
| Ingomar (historical) | city | Mississippi | United States | 32.63 | -91.04 | 98 | |
| Ingram (historical) | city | Mississippi | United States | 34.42 | -90.40 | 160 | |
| Ingrams | city | Mississippi | United States | 33.43 | -90.84 | 98 | |
| Ingrams Mill | city | Mississippi | United States | 34.82 | -89.77 | 301 | |
| Innswood | city | Mississippi | United States | 31.29 | -89.34 | 344 | |
| Innswood South | city | Mississippi | United States | 31.28 | -89.34 | 301 | |
| Insmore | city | Mississippi | United States | 32.01 | -90.73 | 147 | |
| Institute | city | Mississippi | United States | 32.34 | -90.63 | 193 | |
| Inverness | city | Mississippi | United States | 33.35 | -90.59 | 104 | |
| Inwood | city | Mississippi | United States | 33.51 | -90.52 | 114 | |
| Ireland | city | Mississippi | United States | 31.35 | -91.22 | 147 | |
| Irene | city | Mississippi | United States | 31.17 | -90.55 | 344 | |
| Iris (historical) | city | Mississippi | United States | 34.28 | -90.42 | 164 | |
| Isabell (historical) | city | Mississippi | United States | 30.94 | -88.62 | 147 | |
| Isenberg | city | Mississippi | United States | 33.37 | -90.91 | 111 | |
| Isle of Pines Mobile Home Park | city | Mississippi | United States | 30.50 | -88.55 | 9 | |
| Isle of Pines Mobile Home Village | city | Mississippi | United States | 30.38 | -88.63 | 9 | |
| Isola | city | Mississippi | United States | 33.26 | -90.59 | 98 | |
| Issaquena | city | Mississippi | United States | 32.78 | -90.93 | 95 | |
| Itta Bena | city | Mississippi | United States | 33.50 | -90.32 | 124 | |
| Ituma | city | Mississippi | United States | 33.23 | -90.11 | 285 | |
| Iuka | city | Mississippi | United States | 34.81 | -88.19 | 830 |