| Place Name | Wadmalaw Island |
| Place Type | Unincorporated |
| ZIP Code(s) | 29487 |
| County | Charleston County |
| Area Code(s) | 843,854 |
| Timezone | Eastern Daylight Time (EDT) |
| Population () | |
| Metro/Micro Stats Area | Charleston-North Charleston, SC |
| US Congressional District(s) | South Carolina 1st |
| State House Districts | 116 |
| State Senate Districts | 45 |