Katchanavilai is a village in Tiruchendur tehsil in district of Thoothukkudi, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Katchanavilai was 2,946 which includes 1,425 males and 1,521 females. Katchanavilai covers 328.97 ha area. Pincode of Katchanavilai is 628214.