| Post Office Name | City/State | Address | Action |
|---|---|---|---|
| Big Stone City Post Office | Big Stone City, SD 57216 | 553 Main St | View Details Get Directions |
| Claire City Post Office | Claire City, SD 57224 | 270 Main St | View Details Get Directions |
| Corona Post Office | Corona, SD 57227 | 208 Main St | View Details Get Directions |
| Milbank Post Office | Milbank, SD 57252 | 222 E 3rd Ave | View Details Get Directions |
| New Effington Post Office | New Effington, SD 57255 | 211 Main St | View Details Get Directions |
| Peever Post Office | Peever, SD 57257 | 310 Main St | View Details Get Directions |
| Rosholt Post Office | Rosholt, SD 57260 | 12 W Main St | View Details Get Directions |
| Sisseton Post Office | Sisseton, SD 57262 | 205 E Oak St Ste 103 | View Details Get Directions |
| Summit Post Office | Summit, SD 57266 | 301 Maple St | View Details Get Directions |
| Veblen Post Office | Veblen, SD 57270 | 206 S Main St | View Details Get Directions |
| Waubay Post Office | Waubay, SD 57273 | 105 N Main St | View Details Get Directions |
| Wilmot Post Office | Wilmot, SD 57279 | 713 Main St | View Details Get Directions |
| Public Collection Box | Milbank, SD 57252 | 1001 E 4th Ave | Get Directions |
| Public Collection Box | Milbank, SD 57252 | 102 N Main St | Get Directions |
| Public Collection Box | Milbank, SD 57252 | 103 W 4th Ave | Get Directions |
| Public Collection Box | Sisseton, SD 57262 | 112 W Hickory St | Get Directions |
| Public Collection Box | Waubay, SD 57273 | 114 N Main St | Get Directions |
| Public Collection Box | Sisseton, SD 57262 | 12554 Bia Highway 711 | Get Directions |
| Public Collection Box | Milbank, SD 57252 | 1402 Morningside Dr | Get Directions |
| Public Collection Box | Sisseton, SD 57262 | 1712 Sd Highway 10 | Get Directions |
| Public Collection Box | Sisseton, SD 57262 | 5 E Maple St | Get Directions |
