| Business | Phone |
| Yankton City Distribution 315 W Riverside Dr, Yankton 57078 | (605) 668-5273 |
| Yankton City Engineering 416 Walnut St, Yankton 57078 | (605) 668-5251 |
| Yankton City Finance Office 416 Walnut St, Yankton 57078 | (605) 668-5242 |
| Yankton City General Info 410 Walnut St, Yankton 57078 | (605) 668-5200 |
| Yankton Dakota Territory 205 Levee St, Yankton 57078 | (605) 668-5264 |
| Yankton Housing & Redev Comm 416 Walnut St, Yankton 57078 | (605) 668-5256 |
| Yankton Landfill 1200 W 23rd St, Yankton 57078 | (605) 668-5212 |
| Yankton Personnel Dept 416 Walnut St, Yankton 57078 | (605) 668-5222 |
| Yankton Recycling Director Yankton 57078 | (605) 668-5290 |
| Yankton Summit Activities Ctr 1801 Summit St, Yankton 57078 | (605) 668-5234 |
| Yankton Water Plant #1 Mntnc 315 W Riverside Dr, Yankton 57078 | (605) 668-5272 |
| Yankton Water Plant #2 Mntnc 105 W Riverside Dr, Yankton 57078 | (605) 668-5272 |
| Yankton Youth Center Yankton 57078 | (605) 668-5284 |
| Tripp Park Warming House 916 Broadway Ave, Yankton 57078 | (605) 668-5286 |