Koiria Nizamat is a village in Paroo tehsil in district of Muzaffarpur, Bihar, India. As per the data provided by Census of India in 2011, total population of Koiria Nizamat was 3,487 which includes 1,858 males and 1,629 females. Koiria Nizamat covers 314 ha area. Pincode of Koiria Nizamat is 843122.