Mandaiyur is a village in Kulathur tehsil in district of Pudukkottai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Mandaiyur was 3,439 which includes 1,696 males and 1,743 females. Mandaiyur covers 2014.27 ha area. Pincode of Mandaiyur is 622515.