[1] The eastern part of the subdistrict is located in Thung Salaeng Luang National Park.

[2] Wang Nok Aen lies in the Nan Basin, which is part of the Chao Phraya Watershed.

The administration of Wang Nok Aen subdistrict is responsible for an area that covers 333,587 rai ~ 533.7 square kilometres (206.1 sq mi) and consists of 20 administrative villages, as of 2022: 16,310 people.

[4] Wang Nok Aen subdistrict is home to the following active temples, where Theravada Buddhism is practiced by local residents.

There are four health-promoting hospitals in Wang Nok Aen subdistrict.