Located in the middle part of Kerala, the District is bound on the East by Madurai District of Tamil Nadu State while on the West by Ernakulam and Kottayam Districts of Kerala. In the South it is the Pathanamthitta District, while on the North it is bound by Trichur and Coimbatore Districts of Kerala and Tamil Nadu States respectively.

A landlocked district, Idukki is one of the most nature rich areas of Kerala. High ranges and wooded valleys are girded by three main rivers - Periyar, Thalayar and Thodupuzhayar - and their tributaries. The River Pamba also has its origin here. As a tourist destination, Idukki offers diverse attractions like Wildlife sancturies, Hill stations, Dams, Spece plantation tours, Mountain treks, Elephant rides etc.