Matiar Kalan is a village in Bathnaha tehsil in district of Sitamarhi, Bihar, India. As per the data provided by Census of India in 2011, total population of Matiar Kalan was 5,418 which includes 2,867 males and 2,551 females. Matiar Kalan covers 272 ha area. Pincode of Matiar Kalan is 843317.