| Business | Phone |
| Madison County Brd-Supervisors 112 N John Wayne Dr, Winterset 50273 | (515) 462-3225 |
| Madison County Engineer 1105 E Court Ave, Winterset 50273 | (515) 462-1136 |
| Madison County Farm Svc 815 E Highway 92, Winterset 50273 | (515) 462-4884 |
| Madison County Maintenance 1103 E Court Ave, Winterset 50273 | (515) 462-2813 |
| Madison County Multi Purpose C 1724 N John Wayne Dr, Winterset 50273 | (515) 462-4704 |
| Madison County Recorder 112 N 1st St, Winterset 50273 | (515) 462-3771 |
| Madison County Veteran Affairs Po Box 152, Winterset 50273 | (515) 462-4680 |