Salai Dih is a village in Birni tehsil in district of Giridih, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Salai Dih was 1,017 which includes 502 males and 515 females. Salai Dih covers 246.11 ha area. Pincode of Salai Dih is 825324.