Koilvenni is a village in Needamangalam taluk, Thiruvarur district, Tamil Nadu. Its LGD code is 638135 and it covers 8.544 km². Category: Rural.
Bordering villages: Puttr, Mahimalai Bit, Puliyakudi I, Ukkadai, NAGAR, Chittamallimelpathi, Adhanur.
Boundary from the Survey of India village boundary database. All villages in Tamil Nadu