The Mysore division can be divided into 3 unofficial regions. The districts of Mysore, Chamarajanagar, Mandya, Hassan and Chikmagalur are part of Old Mysore region, districts of Dakshina Kannada and Udupi are part of Tulu language speaking Coastal Karnataka region and Kodagu district was part of the erstwhile Part-C state of Coorg. Part of the region falls under the Malnad area of Karnataka while the other part falls under the Kaveri river basin.
