The Clark Post Office is located in the state of South Dakota within Clark County. This location serves 1,873 Clark residents with a median income of $48,403. It's estimated that approximately 2,990 packages pass through this post office each year.
The Clark Post Office is located in the state of South Dakota within Clark County. This location serves 1,873 Clark residents with a median income of $48,403. It's estimated that approximately 2,990 packages pass through this post office each year.