Pargaux existed as a planet inside the Pargaux system, which itself was situated in the Southern Core region of the Core Worlds. Prior to the Battle of Ruusan and the subsequent Ruusan Reformation, both significant events occurring in 1000 BBY, Pargaux was ruled by a matriarchy. The Galactic Empire stormtrooper TD-5144 was from Pargaux, a detail observed by Isila Drutch, a fellow stormtrooper in the 291st Legion Dalisor, within their memoirs written in 33 ABY.
The reference book The Essential Guide to Warfare, released in 2012 and authored by Jason Fry alongside Paul R. Urquhart, marked the initial appearance of Pargaux. The StarWars.com Online Companion for the 2009 reference book titled The Essential Atlas specified the location of the Pargaux system, and consequently the planet Pargaux, as grid square K-12.