Mahajanampakkam is a village in Cheyyar tehsil in district of Tiruvannamalai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Mahajanampakkam was 1,707 which includes 892 males and 815 females. Mahajanampakkam covers 539.88 ha area. Pincode of Mahajanampakkam is 631701.