Gajarsain is a village in Chaubattakhal tehsil in district of Garhwal, Uttarakhand, India. As per the data provided by Census of India in 2011, total population of Gajarsain was 67 which includes 35 males and 32 females. Gajarsain covers 17.88 ha area. Pincode of Gajarsain is 246162.