There are 10 Post Offices in Mercer County, Illinois, serving a population of 15,794 people in an area of 562 square miles. There is 1 Post Office per 1,579 people, and 1 Post Office per 56 square miles.
In Illinois, Mercer County is ranked 22nd of 102 counties in Post Offices per capita, and 73rd of 102 counties in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Mercer County Post Offices.
US Post Office 1600 Southeast 5th Street Aledo, IL Mailing Service, Postal Services
United States Postal Service 401 Main Street North Henderson, IL Mailing Service, Postal Services
United States Postal Service 101 South Main Street Alexis, IL Mailing Service, Postal Services
United States Postal Service 1508 13th Street Viola, IL Mailing Service, Postal Services
United States Postal Service 117 North College Avenue Aledo, IL Mailing Service, Postal Services
United States Postal Service 202 West Main Street Joy, IL Freight Trucking, Logistics, Mailing Service, Postal Services
United States Postal Service 1699 US Highway 67 Preemption, IL Freight Trucking, Logistics, Mailing Service, Postal Services
United States Postal Service 315 Main Street New Windsor, IL Freight Trucking, Logistics, Mailing Service, Postal Services
United States Postal Service 317 Maple Street Seaton, IL Freight Trucking, Logistics, Mailing Service, Postal Services
United States Postal Service 103 South 4th Street Keithsburg, IL Mailbox Rental, Postal Services