Located in
Sanilac County
Port Sanilac Post Offices
Here are all Port Sanilac MI post office locations. There are many post offices in or around Port Sanilac, Michigan to choose from. Below is the location of each Port Sanilac post office. Get the most up-to-date post office hours in Port Sanilac. Find phone numbers and map out the exact location of the post office you are looking for.