Valkkai is a village in Nannilam tehsil in district of Thiruvarur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Valkkai was 3,035 which includes 1,536 males and 1,499 females. Valkkai covers 420.85 ha area. Pincode of Valkkai is 610105.