Since the time of British rule, Coonoor has served as the terminus of the Nilgiri branch of the
Southern Railway zone of the
Indian Railways (formerly under the Madras South-Western Railway). In its early years, the town featured a sub-magistrate's court, a hospital, three churches, several schools, a library, as well as various shops and hotels catering to Europeans. Surrounded by tea and coffee estates, Coonoor is one of the principal hill stations of then
Madras Presidency, second only to
Ooty in natural advantages. The European settlement was located on the upper plateau, while the native quarter was situated on the lower slopes of the valley. In the early 1800s, travelers from the plains reached Coonoor and Ooty via the Old Ooty Road. Coonoor had an Inspection Bungalow where travelers could rest. A historic milestone where the Old Ooty Road approached Coonoor was inscribed with "1 MILE FROM THE BUNGALOW". This marker indicated the distance to the Inspection Bungalow in Coonoor. The rock was unearthed in June 2025. Local historians speculate that the marker might date from the 1830s. == Geography ==