| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Illgau | city | Schwyz | Switzerland | 46.99 | 8.73 | 3349 | 3578 |
| Illgay | city | Ayacucho | Peru | -14.92 | -74.56 | 9228 | 149 |
| Illgen City | city | Minnesota | United States | 47.35 | -91.19 | 830 | |
| Illgrubben | city | Nordland | Norway | 66.30 | 14.35 | 918 | 2510 |