There are 3 zones in Eastern Development Region, they are Mechi, Koshi, Sagarmatha and 16 districts. Mechi, Koshi, Kankai etc are the major rivers of this development region. Mt. Everest, Kanchanjunga, Makalu, Lhotse, Eumori are the main mountains of this development region. Sagarmatha National Park, Makalu Barun National Park, Kanchanjunga Conservation Area, etc. are the main parks and areas of this development region. Biratnagar, Dharan, Illam, Bhojpur are the major towns of this development region. Geographically it is divided into Terai, Hilly and Mountain region.

It has the Eastern Development region to the east, India to the south, Western Development Region to the west. It is the fourth largest development region of Nepal with an area of 27,410 km²(10,580 sq.m). There are 3 zones, which are Janakpur, Narayani, Bagmati, and 19 districts in this development region. Rapti, Bhote Koshi, Kamala, Gosaikunda, Mt. Gaurishankar, Chitwan National Park, Shivapuri Wildlife Reserve, Langtang National Park, Parsa Wildlife Reserve, lies in this development region. Its major cities are Kathmandu, Dhulikhel, Janakpur, Hetauda, Patan, Bharatpur, Bhairawa, Lalitpur, Nagarkot etc. Geographically it is also divided into Mountain, Hill and Terai.

The Western Development Region is located in the west-central part of the country. Its headquarter is in Pokhara. Lumbini, Dhaulagiri and Gandaki are the 3 zones of this development region.It has 16 districts. Marshyangdi, Lake Fewa, Lake Begnas, Mt. Annapurna, Mt. Dhaulagiri, Manaslu and Thaple pass lies in this development region. It also has Annapurna Conservation Area, Dhorpatan Hunting Reserves, Makalu Eco-Tourist Centre. Its major places are Pokhara, Bhairawa, Tansen, Lumbini, Muktinath etc. Geographically it also has Terai, Hill and Himalayan regions and has a similar climate like Eastern Development region.

Rapti, Bheri, Karnali, are the three zones of this region. There are 15 districts in this region. Its main rivers are Karnali, Bheri, Rapti, Babai, etc. and mountains are Mt.Kanjiroba, Mt.Sisne, Mt.Patarasi etc. Bardiya National Park, Shey Phoksundo National Park, Rara National Park are some of the conservation areas of this region. Its major trade centres are Dang, Nepaljung, Birendranagar etc. Its main highways are Ratna Highway and Mahendra Highway. Geographically it also has Hilly, Himalayan and Terai regions. Its total area is 42,378 square km (16,362 sq m). Birendranagar is the headquarter of this region. It occupies 29.2% of the total land of Nepal.

There are 2 zones in Far-Western Development Region. They are Seti and Mahakali. There are 9 districts in this region. It is located at the western end of the country. Seti and Mahakali are the two major rivers of this development region. Mt. Api and Mt. Saipal are the two main mountains of this development region. Suklaphanta Wildlife Reserve, Khaptad National Parks, etc. are the main places which help to attract tourists to this development region. Its major trade areas are Dhangadhi, Mahendranagar and Dipayal. Its main highways are Mahendra highway and Bhimdutta highway. Its area is 19,539 km² (7,544 sq mi). Dipayal is the headquarter of this region.