Kalgaon is a village in Buhana tehsil in district of Jhunjhunun, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Kalgaon was 2,068 which includes 1,093 males and 975 females. Kalgaon covers 465.74 ha area. Pincode of Kalgaon is 333026.