| Place Name | Green Castle |
| Place Type | Unincorporated |
| ZIP Code(s) | 63544 |
| County | Sullivan County |
| Area Code(s) | 660 |
| Timezone | Central Daylight Time (CDT) |
| Population () | |
| US Congressional District(s) | Missouri 6th |
| State House Districts | 3 |
| State Senate Districts | 12 |