Sirsananthar is a village in Mohanpur tehsil in district of Deoghar, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Sirsananthar was 664 which includes 362 males and 302 females. Sirsananthar covers 158 ha area. Pincode of Sirsananthar is 814121.