| population | |
| Arbela | 42 |
| Bear Creek Watershed Dam A-2 | |
| Black Oak Cemetery | |
| Black Oak Church | |
| Black Oak School (historical) | |
| Cedar Grove School (historical) | |
| Etna |
 | Keokuk Municipal Airport | ~ 48.72 km |
| Kirksville Regional Airport | ~ 61.05 km |
| Fort Madison Municipal Airport | ~ 61.46 km |
| Fairfield Municipal Airport | ~ 66.43 km |
| Mount Pleasant Municipal Airport | ~ 68.60 km |
| Ottumwa Regional Airport | ~ 81.48 km |
| Southeast Iowa Regional Airport | ~ 82.62 km |
| Quincy Regional Baldwin Field | ~ 89.35 km |
| Macomb Municipal Airport | ~ 114.55 km |
