Diba Koyar is a village in Phassang tehsil in district of Kurung Kumey, Arunachal Pradesh, India. As per the data provided by Census of India in 2011, total population of Diba Koyar was 123 which includes 53 males and 70 females. Diba Koyar covers 300 ha area. Pincode of Diba Koyar is N/A.