Pachamalai is a village in Gangavalli tehsil in district of Salem, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Pachamalai was 4,712 which includes 2,410 males and 2,302 females. Pachamalai covers 1840.61 ha area. Pincode of Pachamalai is 636105.