Barethi is a village in Nawabganj tehsil in district of Bara Banki, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Barethi was 2,730 which includes 1,435 males and 1,295 females. Barethi covers 206.98 ha area. Pincode of Barethi is N/A.