Alinagar is a village in Surajgarha tehsil in district of Lakhisarai, Bihar, India. As per the data provided by Census of India in 2011, total population of Alinagar was 7,291 which includes 3,857 males and 3,434 females. Alinagar covers 369.1 ha area. Pincode of Alinagar is N/A.