Lagma Patti is a village in Sonbarsa tehsil in district of Saharsa, Bihar, India. As per the data provided by Census of India in 2011, total population of Lagma Patti was 1,024 which includes 539 males and 485 females. Lagma Patti covers 130.01 ha area. Pincode of Lagma Patti is 852107.