Nathoosar is a village in Sri Madhopur tehsil in district of Sikar, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Nathoosar was 2,845 which includes 1,448 males and 1,397 females. Nathoosar covers 540 ha area. Pincode of Nathoosar is 332712.