Gadhaka is a village in Sahawar tehsil in district of Kanshiram Nagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Gadhaka was 4,098 which includes 2,047 males and 2,051 females. Gadhaka covers 318.82 ha area. Pincode of Gadhaka is 207242.