West Bengal state all pin code and postal code list BANKURA 24 PARAGANAS SOUTH KOLKATA PURBA BARDHAMAN BIRBHUM Jhargram PURULIA Alipurduar DARJEELING 24 PARAGANAS NORTH DINAJPUR DAKSHIN MEDINIPUR WEST COOCHBEHAR HOWRAH HOOGHLY PASCHIM BARDHAMAN NADIA MALDAH JALPAIGURI KALIMPONG DINAJPUR UTTAR MURSHIDABAD MEDINIPUR EAST