Nelliyalam is a village in Panthalur tehsil in district of The Nilgiris, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Nelliyalam was 21,836 which includes 10,564 males and 11,272 females. Nelliyalam covers 4774.15 ha area. Pincode of Nelliyalam is 643240.