Post Office - Linn Grove 132 Weaver St Linn Grove, IA 51033 Phone : (712) 296-3265 Business Category Post Offices Toll-Free           (800) ASK-USPS U S Government--post Offices, Linn Grove Linn Grove, IA 51033 Phone : (712) 296-3265 Business Category Post Offices Government Offices & Public Schools