There are 2 Post Offices in Grant Park, Illinois, serving a population of 1,294 people in an area of 4 square miles. There is 1 Post Office per 647 people, and 1 Post Office per 1 square miles.
In Illinois, Grant Park is ranked 499th of 1547 cities in Post Offices per capita, and 736th of 1547 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Grant Park Post Offices.
US Post Office 115 North Main Street Grant Park, IL
United States Postal Service 115 North Main Street Grant Park, IL Mailing Service, Postal Services