Siyalmari Gaon is a village in Dhekiajuli tehsil in district of Sonitpur, Assam, India. As per the data provided by Census of India in 2011, total population of Siyalmari Gaon was 808 which includes 419 males and 389 females. Siyalmari Gaon covers 199.3 ha area. Pincode of Siyalmari Gaon is N/A.