No 1 Sila Block is a village in Sissibargaon tehsil in district of Dhemaji, Assam, India. As per the data provided by Census of India in 2011, total population of No 1 Sila Block was 1,758 which includes 916 males and 842 females. No 1 Sila Block covers 211.51 ha area. Pincode of No 1 Sila Block is 787059.