| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Idaotsa | city | Harjumaa | Estonia | 59.6213889 | 25.0227778 | 3 | 858 |
| Igasalu | city | Harjumaa | Estonia | 59.5186111 | 25.1902778 | 3 | 3795 |
| Igavere | city | Harjumaa | Estonia | 59.34 | 25.0836111 | 167 | 9791 |
| Ihasalu | city | Harjumaa | Estonia | 59.5186111 | 25.1902778 | 3 | 3795 |
| Ikhasalu | city | Harjumaa | Estonia | 59.5186111 | 25.1902778 | 3 | 3795 |
| Il'gaze | city | Harjumaa | Estonia | 59.4866667 | 25.0777778 | 177 | 7054 |
| Il'maso | city | Harjumaa | Estonia | 59.2897222 | 24.1413889 | 68 | 8960 |
| Illurma | city | Harjumaa | Estonia | 59.3380556 | 24.3405556 | 98 | 9750 |
| Illurmaa | city | Harjumaa | Estonia | 59.3380556 | 24.3405556 | 98 | 9750 |
| Ilmandu | city | Harjumaa | Estonia | 59.4452778 | 24.4916667 | 154 | 6951 |
| Ilmasoo | city | Harjumaa | Estonia | 59.2897222 | 24.1413889 | 68 | 8960 |
| Ilʼgaze | city | Harjumaa | Estonia | 59.4866667 | 25.0777778 | 177 | 7054 |
| Ilʼmaso | city | Harjumaa | Estonia | 59.2897222 | 24.1413889 | 68 | 8960 |
| Ingu | city | Harjumaa | Estonia | 59.1833333 | 24.35 | 183 | 9839 |
| Ioa | city | Harjumaa | Estonia | 59.4558333 | 25.1844444 | 127 | 9403 |
| Ioakyula | city | Harjumaa | Estonia | 59.3833333 | 24.35 | 108 | 8589 |
| Iru | city | Harjumaa | Estonia | 59.4594444 | 24.9077778 | 157 | 8657 |
| Iye | city | Harjumaa | Estonia | 59.4333333 | 24.5833333 | 45 | 5886 |
| Iyeere | city | Harjumaa | Estonia | 59.2852778 | 25.4119444 | 203 | 9815 |
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