Viswanathapperi is a village in Sivagiri tehsil in district of Tirunelveli, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Viswanathapperi was 10,483 which includes 5,059 males and 5,424 females. Viswanathapperi covers 3546.22 ha area. Pincode of Viswanathapperi is 627757.