Sub-districts (Tehsils) List of Thiruvallur
A sub-district in an administrative division that is smaller than a district. A district can have multiple sub-districts. In north India, the sub-district called as a Tehsil. The other terms of sub-district such as taluks, subdivisions, mandals, circles are officially used in the administration of respective states.
A little about Thiruvallur
Thiruvallur is district in Tamil Nadu state of India. There are total 9 sub-districts in Thiruvallur.
You can also see the block list of Thiruvallur and village list of Thiruvallur.
Here are the full list of sub-districts of Thiruvallur.