4 Arm is a village in Chhatargarh tehsil in district of Bikaner, Rajasthan, India. As per the data provided by Census of India in 2011, total population of 4 Arm was 2,139 which includes 1,113 males and 1,026 females. 4 Arm covers 2609.58 ha area. Pincode of 4 Arm is 334021.