Lachhman Nagar is a village in Gaighat tehsil in district of Muzaffarpur, Bihar, India. As per the data provided by Census of India in 2011, total population of Lachhman Nagar was 5,283 which includes 2,811 males and 2,472 females. Lachhman Nagar covers 275.2 ha area. Pincode of Lachhman Nagar is 847107.