There are 2 Post Offices in Mill Creek, Washington, serving a population of 19,706 people in an area of 5 square miles. There is 1 Post Office per 9,853 people, and 1 Post Office per 2 square miles.
In Washington, Mill Creek is ranked 401st of 729 cities in Post Offices per capita, and 293rd of 729 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Mill Creek Post Offices.
United States Parcel Service - Mill Creek 15833 Mill Creek Boulevard Mill Creek, WA
United States Postal Service 15833 Mill Creek Boulevard Mill Creek, WA Mailing Service, Postal Services