Karanodai is a northern suburb of Chennai, India located 7 km north of Redhills on GNT Road connecting Chennai with Andhra Pradesh. The town is bounded on north side by Kosasthalaiyar River, also known as Kortalaiyar, which is one of the three rivers that flow in the Chennai metropolitan area. Surrounded by nearby villages like Authur, Sothuperumbedu, Sholavaram, Orakkadu, Nerkundram. Karanodai falls under Madhavaram Constituency in the Tamil Nadu Legislative Assembly, and falls under Thiruvallur Constituency in the Lok Sabha.