| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Gears Ferry | city | Illinois | United States | 42.39 | -90.47 | 830 | |
| Geff | city | Illinois | United States | 38.44 | -88.40 | 830 | |
| Gem Suburban Manufactured Housing Community | city | Illinois | United States | 42.21 | -89.10 | 830 | |
| Geneseo | city | Illinois | United States | 41.45 | -90.15 | 830 | |
| Genet | city | Illinois | United States | 42.34 | -89.08 | 830 | |
| Geneva | city | Illinois | United States | 41.89 | -88.31 | 830 | |
| Geneva Road | city | Illinois | United States | 41.89 | -88.15 | 830 | |
| Genoa | city | Illinois | United States | 42.10 | -88.69 | 853 | |
| Georgetown | city | Illinois | United States | 39.98 | -87.64 | 830 | |
| Georgetown | city | Illinois | United States | 42.14 | -89.83 | 925 | |
| Georgetown | city | Illinois | United States | 40.46 | -90.72 | 830 | |
| Gerald | city | Illinois | United States | 40.27 | -87.93 | 830 | |
| Gerlaw | city | Illinois | United States | 40.99 | -90.60 | 830 | |
| German Corner | city | Illinois | United States | 41.29 | -90.03 | 830 | |
| German Valley | city | Illinois | United States | 42.22 | -89.47 | 830 | |
| Germantown | city | Illinois | United States | 38.55 | -89.54 | 830 | |
| Germantown Hills | city | Illinois | United States | 40.77 | -89.47 | 830 |