| Place Name | Bay Saint Louis |
| Place Type | Unincorporated |
| ZIP Code(s) | 39520 |
| County | Hancock County |
| Area Code(s) | 228 |
| Timezone | Central Daylight Time (CDT) |
| Population () | |
| Metro/Micro Stats Area | Gulfport-Biloxi, MS |
| US Congressional District(s) | Mississippi 4th |
| State House Districts | 122 |
| State Senate Districts | 48 |