Bahainpur is a village in Siana tehsil in district of Bulandshahr, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Bahainpur was 3,340 which includes 1,800 males and 1,540 females. Bahainpur covers 613.32 ha area. Pincode of Bahainpur is N/A.