Sirmadih is a village in Sona Rai Tharhi tehsil in district of Deoghar, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Sirmadih was 249 which includes 134 males and 115 females. Sirmadih covers 99.85 ha area. Pincode of Sirmadih is 814150.