| Usilampatti Constituency |
| Usilampatti Assembly Election Result 2021 | ||
| Candidate Names | Party | Votes |
| Aiyappan | ADMK (WON) | 71255 |
| P.V.Kathiravan | AIFB | 63778 |
| I.Mahendiran | AMMK | 55491 |
| Ainthu Kovilan | NTK | 15357 |
| Usilampatti Constituency Population - 2021 | |||
| Male | Female | Transgender | Total |
| 1,41,955 | 1,41,623 | 10 | 2,83,588 |
| Tamil Nadu Ministers List - 2021 |
| Full Details of Tamil Nadu Ministers 2021 |
| 2016 Election Result | ||
| Name | Party | Votes |
| NEETHIPATHI P | ADMK (WON) | 106349 |
| ILAMAKEZHAN.K | DMK | 73443 |
| BASKARA SETHUPATHY.A | MDMK | 7079 |
| 2011 Election Result | ||
| Name | Party | Votes |
| Kathiravan.P.V (Winner) | AIFB | 88,253 |
| Ramasamy.S.O (Runner Up) | DMK | 72,933 |
| Usilampatti Constituency | ||
| MLA Name | Duration | Parties |
| P. K. Mookiah Thevar | 1957 | Independent |
| P. K. Mookiah Thevar | 1962 | FB |
| P. K. Mookiah Thevar | 1967 | FB |
| P. K. Mookiah Thevar | 1971 | FB |
| P. K. Mookiah Thevar | 1977 | FB |
| S. Andi Thevar | 1980 | FB |
| P. K. M. Muthuramalingam | 1984 | Independent |
| P. N. Vallarasu | 1989 | DMK |
| R. Pandiammal | 1991 | ADMK |
| P. N. Vallarasu | 1996 | FB |
| L. Santhanam | 2001 | FB |
| I. Mahendran | 2006 | ADMK |
| P. V. Kathiravan | 2011 | AIFB |
