According to Ministry of Federal Affairs and Local Development, Phakphokthum has an area of 108.79 square kilometres (42.00 sq mi) and the population of the municipality is 21,619 as of the 2011 Nepal census.

Phakphokthum was a village development committee named Phakphok located in the Mechi Zone.

Phakphok turned into a rural municipality as Phakphokthum and the adjoining village development committees added to this.

The adjoining VDCs added to this were: Amchok, Phuyatappa, Lumde, Ektappa and Chamaita.

The Damak-Rabi Phagunanda road connects the municipality through shortest way with the southern plains.