Sialmari Gaon is a village in Laharighat tehsil in district of Morigaon, Assam, India. As per the data provided by Census of India in 2011, total population of Sialmari Gaon was 200 which includes 112 males and 88 females. Sialmari Gaon covers 329.08 ha area. Pincode of Sialmari Gaon is N/A.