Ritha Mangari is a village in Gairsain tehsil in district of Chamoli, Uttarakhand, India. As per the data provided by Census of India in 2011, total population of Ritha Mangari was 85 which includes 41 males and 44 females. Ritha Mangari covers 13.74 ha area. Pincode of Ritha Mangari is 246440.