Keelappanaiyur is a village in Thirumayam tehsil in district of Pudukkottai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Keelappanaiyur was 2,450 which includes 1,244 males and 1,206 females. Keelappanaiyur covers 927.95 ha area. Pincode of Keelappanaiyur is 622201.