Birnai is a village in Gyanpur tehsil in district of Sant Ravidas Nagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Birnai was 4,936 which includes 2,559 males and 2,377 females. Birnai covers 235.72 ha area. Pincode of Birnai is N/A.