The Adair Post Office is located in the state of Illinois within McDonough County. This location serves 378 Adair residents with a median income of $43,203. It's estimated that approximately 603 packages pass through this post office each year.
The Adair Post Office is located in the state of Illinois within McDonough County. This location serves 378 Adair residents with a median income of $43,203. It's estimated that approximately 603 packages pass through this post office each year.