United States Postal Service

2666 Highway 100
Gray Summit MO 63039
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Opening Hours

  • Mon: 8am-2:30pm
  • Tue: 8am-2:30pm
  • Wed: 8am-2:30pm
  • Thu: 8am-2:30pm
  • Fri: 8am-2:30pm

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Visit your local Post Office at 2666 Highway 100! The Postal Service mission is to provide a reliable, efficient, trusted and affordable universal delivery service that connects people and helps businesses grow. The U.S. Postal Service is the only delivery service that reaches every address in the nation: 155 million residences, businesses and Post Office Boxes. With more than 31,600 retail locations and the most frequently visited website in the federal government, the Postal Service delivers 47 percent of the world’s mail.