Palakkad District is one of the 14 districts of the Indian state of Kerala. The city of Palakkad is the district headquarters. Palakkad District is bordered on the northwest by the Malappuram District, on the southwest by the Thrissur District, on the northeast by the Nilgiris District and on the east by Coimbatore district of Tamil Nadu. Palakkad District is 24.4% urbanised according to the population census of 2011. The district is nicknamed "the granary of Kerala" and "Rice bowl of Kerala". Palakkad District has a tropical wet and dry climate. The temperatures of Palakkad District remain moderate throughout the year, with exception in March and April being the hottest months. A very high amount of precipitation is received in Palakkad, mainly due to the South-West monsoon. July is the wettest month, and the total annual rainfall is around 83 inches.
Idukki is one of the 14 districts of Kerala state. This district was created on 26th January 1972. At that time, the district headquarters was at Kottayam. In June 1976, Idukki District was moved to Painavu. Idukki lies in the Western Ghats Mountain Range of India. It is the second largest district in area but has the lowest population density. Idukki has a vast forest reserve area; more than a half of the district is covered by forests. The urban areas are densely populated whereas villages are sparsely populated.
Pathanamthitta district is a district in the southern part of Kerala. The district headquarters is in the town of Pathanamthitta. However, Tiruvalla city is the largest commercial centre in the district. Kottayam District, Idukki District, Alappuzha District and Kollam district surrounded the district. Pathanamthitta district has a border with the state of Tamil Nadu in the east. Pathanamthitta, Tiruvalla, Adoor, Konni, Ranni and Mallapally are the taluks in the district. There are four municipalities in Pathanamthitta District. They are Tiruvalla, Adoor, Pathanamthitta and Pandalam.