Find Post office Near Me in Sundown Welcome to our new site: catalog of Post office of Sundown, Texas. Find Post office Near Me. United States Postal Service Establishment Finance Post office +1 800-275-8777 807 South Slaughter Avenue, Sundown, TX 79372 TEXAS-PAGES.COM Sundown Post office Types of organizations in Sundown, Texas All types Atm Bank Car repair Clothing store Electronics store Establishment Finance Fire station Food Furniture store Gas station General contractor Health Home goods store Library Local government office Park Post office School Supermarket