| Business | Phone |
| Sisseton City Finance Officer 513 Veterans Ave, Sisseton 57262 | (605) 698-3391 |
| Sisseton Housing & Redev Cmmsn 123 E Chestnut St, Sisseton 57262 | (605) 698-3463 |
| Sisseton-Wahpeton Sioux Tribe 11 E Chestnut St, Sisseton 57262 | (605) 698-3531 |