Beltharwa is a village in Kusheshwar Asthan Purbi tehsil in district of Darbhanga, Bihar, India. As per the data provided by Census of India in 2011, total population of Beltharwa was 498 which includes 283 males and 215 females. Beltharwa covers 369 ha area. Pincode of Beltharwa is 848207.