Ulundai is a village in Vandavasi tehsil in district of Tiruvannamalai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Ulundai was 2,276 which includes 1,173 males and 1,103 females. Ulundai covers 744.45 ha area. Pincode of Ulundai is 604403.