Merpanaikadu is a village in Aranthangi tehsil in district of Pudukkottai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Merpanaikadu was 6,759 which includes 3,179 males and 3,580 females. Merpanaikadu covers 940.63 ha area. Pincode of Merpanaikadu is 614624.