Nag Mandir is a village in Singchung tehsil in district of West Kameng, Arunachal Pradesh, India. As per the data provided by Census of India in 2011, total population of Nag Mandir was 183 which includes 82 males and 101 females. Nag Mandir covers N/A area. Pincode of Nag Mandir is 790116.