Periapalayam is a village about 40 km north of Chennai, in Tiruvallur district, Tamil Nadu State, India. The nearest Railway station is Thiruninravur.It is in Ellapuram block which stretches from east Thanakulam village, west Uthukottai, north Kosavanpettai and in the south up to Komakambedu village. It has one of the main routes to Andhra Pradesh.