Kam Sar is a village in Itwa tehsil in district of Siddharthnagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Kam Sar was 1,386 which includes 715 males and 671 females. Kam Sar covers 195.54 ha area. Pincode of Kam Sar is N/A.