Kumily's modern development began in the early 20th century under the Travancore princely state, when high-range forests were cleared for plantation agriculture. Settlers from central Kerala and Tamil Nadu were resettled to cultivate cardamom, tea, and rubber, transforming the region into a major spice hub despite challenges from wildlife and
malaria. The area saw significant migration in the 1940s–1950s during post-war agricultural expansion. After Indian independence in 1947, Kumily became part of
Travancore-Cochin state in 1949. With the formation of Kerala state on 1 November 1956, it was included in the newly created
Kottayam district before being transferred to Idukki district upon its formation on 26 January 1974. The establishment of the
Periyar Wildlife Sanctuary in 1950 (notified as a tiger reserve in 1978) brought conservation focus, restricting further forest clearance and shifting economic reliance toward
eco-tourism. By the 1980s, Kumily emerged as a gateway town for sanctuary visitors, with homestays and spice shops replacing some plantation labor. The Grama Panchayat system formalized local governance; Kumily Grama Panchayat was constituted under the Kerala Panchayat Raj Act, 1994, covering 816.73 km² including revenue villages like Kumily and Thekkady. As of 2023, it remains a key border settlement facilitating trade and tourism between Kerala and Tamil Nadu. == Demographics ==