The Janesville Post Office is located in the state of Illinois within Coles County. This location serves 1,316 Lerna residents with a median income of $55,543. It's estimated that approximately 2,100 packages pass through this post office each year.
The Janesville Post Office is located in the state of Illinois within Coles County. This location serves 1,316 Lerna residents with a median income of $55,543. It's estimated that approximately 2,100 packages pass through this post office each year.