DISTRICT AREA [Sq km] POPULATION Thiruvananthapuram 2192 2,938,538 Kollam 2579 2,398,285 Alappuzha 1256 1,990,603 Pathanamthitta 2731 1,186,628 Kottayam 2204 1,819,581 Idukki 4998 1,076,555 Ernakulam 2408 2,797,779 Thrissur 3032 2,734,333 Palakkad 4480 2,376,160 Malappuram 3548 3,093,190 Kozhikode 2345 2,612,897 Wyanad 2132 671,195 Kannur 2997 2,244,819 Kasargode 1961 1,070,629