Kathia Janaki 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 Kathia Janaki was 697 which includes 376 males and 321 females. Kathia Janaki covers 85 ha area. Pincode of Kathia Janaki is 814157.