The Ionia Post Office is located in the state of Michigan within Ionia County. This location serves 20,269 Ionia residents with a median income of $38,517. It's estimated that approximately 32,352 packages pass through this post office each year.
The Ionia Post Office is located in the state of Michigan within Ionia County. This location serves 20,269 Ionia residents with a median income of $38,517. It's estimated that approximately 32,352 packages pass through this post office each year.