The Mendon Post Office is located in the state of Illinois within Adams County. This location serves 1,856 Mendon residents with a median income of $50,197. It's estimated that approximately 2,962 packages pass through this post office each year.
The Mendon Post Office is located in the state of Illinois within Adams County. This location serves 1,856 Mendon residents with a median income of $50,197. It's estimated that approximately 2,962 packages pass through this post office each year.