Raghubirchak is a village in Rajnagar tehsil in district of Madhubani, Bihar, India. As per the data provided by Census of India in 2011, total population of Raghubirchak was 3,154 which includes 1,651 males and 1,503 females. Raghubirchak covers 42 ha area. Pincode of Raghubirchak is 847235.