Onamakulam is a village in Kayatharu taluk, Thoothukudi district, Tamil Nadu. Its LGD code is 642386 and it covers 11.93 km². Category: Rural.
Bordering villages: Sankaraperi, Malaipatti, Ilavelangal, Thennampatti, Kudiraikulam.
Boundary from the Survey of India village boundary database. All villages in Tamil Nadu