Lakhanwar Kalna is a village in Robertsganj tehsil in district of Sonbhadra, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Lakhanwar Kalna was 372 which includes 210 males and 162 females. Lakhanwar Kalna covers 35.92 ha area. Pincode of Lakhanwar Kalna is N/A.