Garhia Lohir is a village in Nauhatta tehsil in district of Saharsa, Bihar, India. As per the data provided by Census of India in 2011, total population of Garhia Lohir was 1,419 which includes 754 males and 665 females. Garhia Lohir covers 115 ha area. Pincode of Garhia Lohir is 852123.