Pahnasa is a village in Maharajganj tehsil in district of Rae Bareli, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Pahnasa was 2,812 which includes 1,432 males and 1,380 females. Pahnasa covers 488.1 ha area. Pincode of Pahnasa is N/A.