United States Government--post Office Dawn, TX 79025 Phone : (806) 258-7384 Business Category Post Offices Government Offices & Public Schools Automated Postal Center - Dawn 100 Avenue C Dawn, TX 79025 Phone : (806) 258-7384 Business Category Automated Postal Centers Toll-Free           (800) ASK-USPS Post Office - Dawn 100 Avenue C Dawn, TX 79025 Phone : (806) 258-7384 Post Office - Dawn Business Category Post Offices Toll-Free           (800) ASK-USPS