The Salem Post Office is located in the state of Illinois within Marion County. This location serves 11,385 Salem residents with a median income of $44,276. It's estimated that approximately 18,172 packages pass through this post office each year.
The Salem Post Office is located in the state of Illinois within Marion County. This location serves 11,385 Salem residents with a median income of $44,276. It's estimated that approximately 18,172 packages pass through this post office each year.