The authority areas of Medadumbara Pradeshiya Sabha is located within the boundaries of Panwila Pradeshiya Sabha and Udadumbara Pradeshiya Sabha authority areas in the North, Walapane Pradeshiya Sabha authority areas in the South and Kundasale Pradeshiya Sabha authority areas in the West and as well as it is located in the favour of East boundaries of the Central Region.
Medadumbara Pradeshiya Sabha authority areas located 1400 feet above mean sea level, in the hilly wet zone. The total area consist 196.01 sqare km, equal to 48415.28 acre land in extent. It consist of 93 Grama Niladhari divisions with a total population of 70541, within 275 villages.