| population | |
| Carthill School (historical) | |
| Crossno School (historical) | |
| Duncan Cemetery | |
| Duncan School (historical) | |
| Hookdale | |
| Keyesport | 401 |
| Keyesport Fire Protection District |
 | Greenville Airport | ~ 7.94 km |
| Vandalia Municipal Airport | ~ 26.22 km |
| Salem–Leckrone Airport | ~ 34.17 km |
| Centralia Municipal Airport | ~ 35.70 km |
| Scott AFB/Midamerica Airport | ~ 52.60 km |
| St Louis Regional Airport | ~ 64.54 km |
| St Louis Downtown Airport | ~ 76.97 km |
| Sparta Community Hunter Field | ~ 78.32 km |
| St Louis Lambert International Airport | ~ 91.72 km |
