There are 2 Post Offices in Sumner, Washington, serving a population of 9,789 people in an area of 8 square miles. There is 1 Post Office per 4,894 people, and 1 Post Office per 3 square miles.
In Washington, Sumner is ranked 355th of 729 cities in Post Offices per capita, and 341st of 729 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Sumner Post Offices.
U S Post Office 1125 57th Street East Sumner, WA Mailing Service, Postal Services
United States Postal Service 1313 Fryar Avenue Sumner, WA Mailing Service, Postal Services