Phu Hin Rong Kla National Park is in Nakhon Thai District.

[2] Nakhon Thai lies within the Nan Basin, which is part of the Chao Phraya Watershed.

Nakhon Thai is divided into 11 sub-districts (tambons), which are further subdivided into 145 administrative villages (mubans).

Nakhon Thai is a district on the outskirts of Phitsanulok province, more than 80% of which is reserved forest area.

Therefore, Nakhon Thai and two neighboring districts, Chat Trakan and Wat Bot, have the lowest prosperity index in Phitsanulok, lowest household income and highest household debt.