Thethar Basna is a village in Kotkasim tehsil in district of Alwar, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Thethar Basna was 419 which includes 219 males and 200 females. Thethar Basna covers 196.81 ha area. Pincode of Thethar Basna is 301401.