Its INSEE code is 112 and its capital city is Limoux.

[2] Its population is 42,296 (2021), and its area is 1,727.3 km2 (666.9 sq mi).

The only city in the arrondissement with a population of 10,000 or higher is the capital, Limoux, with 10,180 inhabitants (2012).

[6] As a result of the reorganisation of the cantons of France which came into effect in 2015, the borders of the cantons are no longer related to the borders of the arrondissements.

The cantons of the arrondissement of Limoux were, as of January 2015:[4]