Posted on February 18, 2019 February 18, 2019 by WebsiteYellowPages.com American Postal Workers Union 1 2 3 4 50.000 LocationsDelaware Bookmark Contact Information Business Name American Postal Workers Union Address PO Box 311, Delaware 19720-0311 Phone Number 3024298945 Fax Number 3023228994 Post navigationPrevious post: Patterson-Schwartz & Assoc.Next post: Falkowski & Assoc.; Inc.