Undel Nagar is a village in Siwana tehsil in district of Barmer, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Undel Nagar was 2,037 which includes 1,121 males and 916 females. Undel Nagar covers 1643 ha area. Pincode of Undel Nagar is 344801.