Sagarmāthā is a Nepali word which as per some sources, is derived from सगर ("sagar", sky) and माथा ("māthā", head).

It includes mountain districts of the Himalayas (including the world's highest peak Mount Everest)[1] in the north, hill districts in the center, and valley districts of the Terai in the south.

1, while the two southernmost districts have been resigned as part of Province No.

The main city of the Sagarmāthā Zone was Rajbiraj which was also the headquarters.

Other towns of the Sagarmāthā hill area were Katari, Okhaldhunga, Diktel, Salleri and Namche Bazaar; while Kathauna, Lahan, Fatepur, Rajbiraj and Siraha are in the outer Terai.