1. Ambrosy Dairy Farms Inc 12092 Buncombe Rd, Zwingle, IA 52079 Coordinate: 42.35139,-90.72636 Phone: (563) 583-8047
2. Three Hills Ranch Inc 19813 S Garry Owen Rd, Zwingle, IA 52079 Coordinate: 42.277485,-90.75066 Phone: (563) 879-4492