Find Post office Near Me in Bayside Welcome to our new site: catalog of Post office of Bayside, Texas. Find Post office Near Me. Closed now United States Postal Service Establishment Finance Post office +1 800-275-8777 715 3rd Street, Bayside, TX 78340 TEXAS-PAGES.COM Bayside Post office Types of organizations in Bayside, Texas All types Establishment Finance Gas station General contractor Insurance agency Park Post office