The district is subdivided into 20 subdistricts (tambon), which are further subdivided into 173 villages (muban). Phitsanulok is a city (thesaban nakhon) which covers the whole tambon Nai Mueang. The township (thesaban tambon) of Ban Mai covers parts of the tambon Wang Nam Khu and Wat Phrik. There are further 19 Tambon administrative organizations (TAO).