Post Office - Austin 55 N 2nd St Austin, IN 47102 Phone : (812) 794-2321 Post Office - Austin Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (812) 794-3083 United States Government--post Offices, Austin 55 N 2nd St Austin, IN 47102 Phone : (812) 794-2321 United States Government--post Offices, Austin Business Category Post Offices Government Offices & Public Schools