Tilaiya Kalan is a village in Barachatti tehsil in district of Gaya, Bihar, India. As per the data provided by Census of India in 2011, total population of Tilaiya Kalan was 737 which includes 382 males and 355 females. Tilaiya Kalan covers 142 ha area. Pincode of Tilaiya Kalan is N/A.