Smallest Administrative Division in Pakistan

The smallest administrative unit in Pakistan is the district (zila).

Hierarchy:

1. Provinces (4) + Federal Capital Territory (Islamabad)
2. Divisions (30+)
3. Districts (137+) ← smallest
4. Tehsils / Talukas
5. Union Councils

Each district is headed by a Deputy Commissioner (DC) and subdivided into tehsils.