United States Postal Service Keywords: Advanced Search Directory View All Listings Add Listing United States Postal Service Business/Organization Name United States Postal Service Business/Organization Genre Mailing Services Business/Organization Address, City and Zip Code 507 Main St., Seward, NE 68434 Business/Organization Phone Number 1-800-275-8777 Business/Organization Website Address http://www.usps.com Business/Organization Tags mailing, post office, Seward, stamps