Find Post office Near Me in Grandfalls Welcome to our new site: catalog of Post office of Grandfalls, Texas. Find Post office Near Me. Closed now United States Postal Service Establishment Finance Post office +1 800-275-8777 214 N Avenue D, Grandfalls, TX 79742 TEXAS-PAGES.COM Grandfalls Post office Types of organizations in Grandfalls, Texas All types Cafe Campground Church Establishment Finance Food General contractor Library Local government office Lodging Park Place of worship Post office Rv park