On the basis of geography the state's districts are generally grouped into three parts :- The "North Kerala" districts of Kasaragod, Kannur, Wayanad, Kozhikode ; the "Central Kerala" districts of Palakkad, Thrissur, Ernakulam, Idukki, Malappuram, Kottayam and the "South Kerala" districts of Thiruvananthapuram, Kollam, Alappuzha, Pathanamthitta.