Lumbnathnagar is a village in Gudha Malani tehsil in district of Barmer, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Lumbnathnagar was 421 which includes 224 males and 197 females. Lumbnathnagar covers 331.34 ha area. Pincode of Lumbnathnagar is 344704.