There are 2 Post Offices in Sumner, Illinois, serving a population of 3,285 people in an area of 2 square miles. There is 1 Post Office per 1,642 people, and 1 Post Office per square mile.
In Illinois, Sumner is ranked 713rd of 1547 cities in Post Offices per capita, and 434th of 1547 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Sumner Post Offices.
US Post Office 120 West South Avenue Sumner, IL
United States Postal Service 120 West South Avenue Sumner, IL Mailing Service, Postal Services