United States Government 5918 E Main St Cross Plains, IN 47017 Phone : (812) 667-5752 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Friendship 5918 E Main St Friendship, IN 47021 Phone : (812) 667-5752 Post Office - Friendship Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (812) 667-6978