The Lanark Post Office is located in the state of Illinois within Carroll County. This location serves 2,831 Lanark residents with a median income of $54,432. It's estimated that approximately 4,519 packages pass through this post office each year.
The Lanark Post Office is located in the state of Illinois within Carroll County. This location serves 2,831 Lanark residents with a median income of $54,432. It's estimated that approximately 4,519 packages pass through this post office each year.