Ilam distric is one of the seventy-five districts of Nepal, The district, with the town of Ilam as its district headquarters, covers an area of 1,703 km² and has a population (2001) of 282,806. It is about 600 km from Kathmandu. The highest point is Sandakpur with an elevation of 3000m. Ilam attracts many researchers who come to study rare birds and tea estate. Ilam stretches from the Terai belt to the upper hilly belt of this Himalayan nation.
The name Ilam is derived from the Limbu language in which "Ii" means twisted and "Lam" means road. Ilam was one of the ten self ruling states of Limbuwan before the unification of Nepal, its ruler King Hangshu Phuba Lingdom of Lingdom dynasty ruled Ilam as a confederate state of Limbuwan until 1813 AD. The treaty between the other Limbuwan states and the King of Gorkha (Gorkha-Limbuwan Treaty of 1774 AD) and the conflict of Gorkha and Sikkim led to the unification of Ilam with Gorkha. Ilam was the last of the ten kingdoms of Limbuwan to join the union of Nepal. The King of Gorkha gave the ruler of Ilam full autonomy to rule and the right of Kipat. Ilam was an independent Limbu kingdom until 1813 CE/1869 BS.
Ilam is today famous in the world for tea production. Its ILAM TEA is very famous and is exported to many parts of Europe. The main source of income in this district is tea, cardamom, milk, ginger and potato.
This place also has a religious importance. The devi temples have a great importance attached to them and many people come here just for pilgrimage.
The major attraction of Ilam is the 9-cornered Mai Pokhari lake. Also known as the abode of the goddess lots of tourists as well as Nepalese people come to visit this lake. Mai river and its four tributaries also emerge in Ilam district. The famous Mane Bhanjyang (Mane pass) connects Ilam with Darjeeling district of West Bengal, India.