Thumhwamafi is a village in Bansi tehsil in district of Siddharthnagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Thumhwamafi was 289 which includes 159 males and 130 females. Thumhwamafi covers 21.75 ha area. Pincode of Thumhwamafi is N/A.