Posted on January 1, 2019 April 7, 2019 by WebsiteYellowPages.com US Post Office 1 2 3 4 50.000 CategoriesPost Offices LocationsIllinois Bookmark Contact Information Business Name US Post Office Address 232 N Union St, Illinois 61010-8812 Phone Number 5164872508 Fax Number 8152347051 Website http://www.usps.com CategoriesPost Offices Post navigationPrevious post: Extended Stay AmericaNext post: Sproat Group; Inc.