It comprises 15 legislators, elected in a single province-wide multi-member district that encompasses the entirety of the province's territory.

[2] Elections to the legislature take place every four years, when the entirety of its members are renewed.

[1] The legislature formerly convened at the Old Government House, on Maipú Avenue, Ushuaia.

[4] Since 2019, the president of the legislature has been Mónica Urquiza, of the Fueguian People's Movement (MOPOF).

Urquiza was elected in the gubernatorial ticket of Gustavo Melella.