Ilavelangal is a village in Ottapidaram tehsil in district of Thoothukkudi, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Ilavelangal was 1,475 which includes 744 males and 731 females. Ilavelangal covers 864.09 ha area. Pincode of Ilavelangal is 628723.