| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Illan de Vacas | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 39.97 | -4.55 | 1666 | 3254 |
| Illana | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 40.18 | -2.90 | 2782 | 548 |
| Illescas | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 40.12 | -3.83 | 1837 | 16824 |
| Imón | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 41.17 | -2.73 | 3156 | 880 |
| Infantes | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 38.73 | -3.02 | 2867 | 3705 |
| Iniesta | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 39.43 | -1.75 | 2503 | 1968 |
| Iniéstola | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 41.00 | -2.37 | 3730 | 200 |
| Iriépal | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 40.63 | -3.12 | 3103 | 46746 |
| Irueste | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 40.62 | -2.88 | 3244 | 689 |
| Isso | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 38.48 | -1.75 | 1525 | 7774 |
| Ituero | city | Comunidad Autonoma de Castilla-La Mancha | Spain | 38.75 | -2.30 | 3490 | 221 |