Note: Estimated based on the average number of permanent and casual labour employed in different zones.
| 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| The Nilgiris | 3 281 | 3 281 | 3 281 | 3 281 | 3 281 | 3 281 | 3 281 | 3 511 | 3 604 | 3 604 | 3 643 | 3 669 | 3 669 | 3 669 | 3 669 |
| Salem District | 3 471 | 3 941 | 3 941 | 3 526 | 6 261 | 6 261 | 6 322 | 7 162 | 7 475 | 4 876 | 4 876 | 4 876 | 4 876 | 4 876 | 4 899 |
| Coimbatore | 2 049 | 2 049 | 2 049 | 2 056 | 2 049 | 2 049 | 2 046 | 2 049 | 2 049 | 2 048 | 1 970 | 1 970 | 1 970 | 1 970 | 1 970 |