Gaj Sera is a village in Yamkeshwar tehsil in district of Garhwal, Uttarakhand, India. As per the data provided by Census of India in 2011, total population of Gaj Sera was 11 which includes 4 males and 7 females. Gaj Sera covers 2.82 ha area. Pincode of Gaj Sera is 246121.