Gangsar Gaon is a village in Narendranagar tehsil in district of Tehri Garhwal, Uttarakhand, India. As per the data provided by Census of India in 2011, total population of Gangsar Gaon was 121 which includes 50 males and 71 females. Gangsar Gaon covers 23.85 ha area. Pincode of Gangsar Gaon is 249146.