Madison County Post Offices

There are 26 US Post Offices in Madison County serving a total of 271,743 residents equating to 10,452 residents per post office. It's estimated that approximately 433,732 packages are handled across the 26 county post offices annually. Madison County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 269,282. The county seat is Edwardsville, and its largest city is Granite City. Madison County is part of the Metro-East region of the St. Louis, MO-IL Metropolitan Statistical Area. The pre-Columbian city of Cahokia Mounds a World Heritage Site was located near Collinsville. Edwardsville is home to Southern Illinois University Edwardsville. To the north, Alton is known for its abolitionist and American Civil War-era history. It is also the home of Southern Illinois University Dental School."

Alhambra Post Office

Bethalto Post Office

Collinsville Post Office

Cottage Hills Post Office

Dorsey Post Office

East Alton Post Office

Edwardsville Post Office

Glen Carbon Post Office

Godfrey Post Office

Hamel Post Office

Hartford Post Office

Highland Post Office

Livingston Post Office

Madison Post Office

Marine Post Office

Maryville Post Office

Moro Post Office

Nameoki Post Office

New Douglas Post Office

Saint Jacob Post Office

South Roxana Post Office

Troy Post Office

Upper Alton Post Office

Venice Post Office

Wood River Post Office

Worden Post Office

Madison County

Post Offices by ZIP Code