Post Office - Hornick 315 Main St Hornick, IA 51026 Phone : (712) 874-3799 Business Category Post Offices Toll-Free           (800) ASK-USPS Post Office - Climbing Hill 77 Deer Run Trl Climbing Hill, IA 51015 Phone : (712) 874-3799 Business Category Post Offices Toll-Free           (800) ASK-USPS