| Business | Phone |
| Village Clerk Office 101 S 5th St, Dupo 62239 | (618) 286-5151 |
| Sugar Loaf General Assistance 240 S 5th St, Dupo 62239 | (618) 286-3315 |
| Sugar Loaf Township Ofc 240 S 5th St, Dupo 62239 | (618) 286-4016 |
| Dupo Gas Dept 713 N 2nd St, Dupo 62239 | (618) 286-4097 |
| Dupo Village Bluff Pump House 112 Industrial Dr, Dupo 62239 | (618) 286-3276 |
| Dupo Village Office 100 N 2nd St, Dupo 62239 | (618) 286-3280 |
| Dupo Water Pumping Station 195 Coullter, Dupo 62239 | (618) 286-5200 |