Chak Dadar is a village in Kolayat tehsil in district of Bikaner, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Chak Dadar was 103 which includes 58 males and 45 females. Chak Dadar covers 1239.3 ha area. Pincode of Chak Dadar is 334302.