GovernanceDMK-AIADMK alternation
Nagapattinam district carved out of Thanjavur

On 19 October 1991, Nagapattinam district was created by splitting the composite Thanjavur district in two.
The former composite Thanjavur district was divided on 19 October 1991, and Nagapattinam district came into being. It took in the coastal and tail-end areas of the Cauvery delta, among them the taluks that now form Tiruvarur. Tiruvarur district was later split off in 1997, followed by Mayiladuthurai district in 2020. No other district in the state was discontiguous, a distinction Nagapattinam held until 2020.




