South West Garo Hills district all pin code and postal code list Balurghat B.O Gopinath Killa B.O Kalaipara B.O Salmanpara B.O Chapahati B.O Mahendraganj S.O (West Garo Hills) Kawahagra B.O Betsing B.O Nogorpara B.O Katuli B.O Bandelkona B.O Majerchar B.O Ampati S.O Zigzak B.O Kalaichar B.O Sulguri B.O