The Collectorate play a pivotal role in the District administration. Collector in the Cadre of I.A.S heads the District. He acts as the District Magistrate for maintaining Law and Order in his jurisdiction. He deals mainly with planning and development, law and order, general elections, arms licensing etc.
The Additional Collector/ District Revenue Officer run the Revenue administration under various enactments in the District. He is also designated as Additional District Magistrate. He mainly deals with civil supplies, land matters, mines and minerals, village officers etc.
The District Revenue Officer (DRO) and Deputy Collectors assist the Collector in discharging their duties. The District Revenue Officer looks after all the branches of the Collectorate. He deals mainly with general administration and is vested with supervision of day-to-day functions of the Collectorate.
The Project Director, District Rural Development Agency in the cadres of IAS / DRO, Personal Assistant Panchayat Development in the cadre of Deputy Collector, Municipal commissioners & Executive Officers of Town Panchayats are assisting the collector in panchayat development and urban local body related works.
Section A: Office Procedure, Staff Establishment, Tappals, Disciplinary Proceedings, Appointments.
Section B: Zamabandhi, Irrigation, Embezzlement – Census related subjects, VAO, VA Establishment, Inspection & Meeting Related matters.
Section C: Cinema, Theatres, Jails, Land Order, Criminal Cases, Gun, Building License, Arms, Act, Pollution.
Section D: Land Transfer, encroachment, assignment, lease allied subjects.
Section E: Land Acquisition, Court cases, Election, census allied subjects.
Section G: GDP, CM Cell, Minister petition, CM Relief Fund, ARS, DRS, OAP etc.,
Section I: Record, Library, Revenue Buildings, Birth & Death, Trees, Minimum Wages, TNPSC and other Government Exams related etc.,
Section J: Srilankan Refugees, RR Act, Audit, Revenue Collection allied subjects.
Section K: Pay and Accounts, Vehicles, Fuel, HBA etc.,
Section L: RTI, SSW Schemes, Employment, Factories, Fan, Mixie, Grinder etc.,
Section M: Land Reforms, Bhoodhan Land and related Court cases.
AC Excise: Collection of Excise Duties, ML2, ML4 License, Court Cases.
DADWO : AD Welfare, hostels, bonded labour, Scholarship, Community Verification.
DBCWO : Establishment, BC Hostels, Scholarships.
DM : Disaster Management, Fire, Natural Calamities etc.,
DSO : Civil Supplies & Consumer Protection.
R : VIP Visits and Reception Works.
Stamps : Indian Stamps Act, Land Value.
TSR : Tsunami, Land Matters allied subjects.
TACTV : Government Cable TV related subjects.
Airport Office: Airport Land Related subjects.
Rural Development and Panchayat Raj
PO (TNSRLM) : Mahalir Thittam
PA (PD) : Development
AD (P) : Panchayats Related Activities
AD (Audit) : Audit and High Level committee
PA (NMP) : School Noon Meals Related Activities
District Panchayat Office : Panchayated Related Activities.
SS: Small Savings and Allied Subjects.
Agriculture : Agriculture & Allied Subjects.
PRO : Information, News, Press Release & Public Relation.
ICDS : Integrated Child Development Scheme related subjects.
D.D (Mines) : Department of Geology and Mining, Mining related subjects.
THADCO : Tamil Nadu Adi Dravidar Housing & Development.
Tamil Development : Department of Tamil Development.
A.D. (Survey) : Survey of land related subjects.
Statistics : Department of Statistics, Statistics related subjects.