There is only one Post Office in Phimai town. It is open from Monday to Friday between 8:30-16:30, and on Saturdays from 8:30-12:30. It is closed on Sundays.
Post boxes in Thailand are red. You can see one in the photos above and below.
The post code for Phimai town is 30110.
Phimai post office is located at 123 Wonprang Road, Phimai, 30110.
Above is an interactive Google map showing the location of the Post Office in Phimai.
The telephone number for the post office in Phimai town is 044-471342.