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