Dedamai is a village in Sasni tehsil in district of Mahamaya Nagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Dedamai was 1,995 which includes 1,084 males and 911 females. Dedamai covers 229.05 ha area. Pincode of Dedamai is 202002.