The Western Conference is one of two conferences in the USL Championship, the second level of men's club soccer in the United States.
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Changes from 2014: USL Pro expanded and was rebranded as simply USL; the round robin table was split into two conferences: Eastern and Western.
Changes from 2015: Rio Grande Valley FC Toros, the Swope Park Rangers and San Antonio FC were added as expansion franchises; Saint Louis FC moved in from the Eastern Conference; the Austin Aztex went on hiatus
Changes from 2016: Arizona United SC was renamed Phoenix Rising FC; the Orange County Blues was renamed Orange County SC; the Austin Aztex folded; Reno 1868 FC was added as an expansion franchise; Saint Louis FC moved out to the Eastern Conference
Changes from 2017: Fresno FC and Las Vegas Lights FC were added as expansion franchises; the Vancouver Whitecaps 2 folded; Saint Louis FC moved in from the Western Conference.
Changes from 2018: Austin Bold FC, El Paso Locomotive FC and the New Mexico United were added as expansion franchises.; Saint Louis FC and the Swope Park Rangers moved out to the Eastern Conference; Seattle Sounders FC 2 rebranded as Tacoma Defiance.
Changes from 2019: San Diego Loyal SC was added as an expansion franchise; the Tulsa Roughnecks were renamed FC Tulsa; Fresno FC was disbanded. In response to the COVID-19 pandemic the conference was split into four groups. Two groups of four and two groups of five.
Changes from 2020: The conference was divided into two divisions, Mountain and Pacific; Oakland Roots SC joined in from NISA: the Portland Timbers 2 was withdrawn by the MLS parent club; Reno 1868 FC was disbanded; Oklahoma City Energy and FC Tulsa moved out to the Eastern Conference.
Changes from 2021: The Mountain and Pacific divisions were dropped; Monterey Bay FC was added as an expansion franchise; the Real Monarchs and the Tacoma Defiance were withdrawn by their MLS parent clubs and moved to MLS Next Pro; Austin Bold FC went on hiatus; will move to a yet-to-be-named Texas city for the 2023 season.
Changes from 2022: The LA Galaxy II was withdrawn by their MLS parent club and moved to MLS Next Pro;
Changes from 2023: Rio Grande Valley FC Toros and San Diego Loyal SC folded. FC Tulsa and Memphis 901 FC moved from the Eastern Conference.
Changes from 2024: Lexington SC joined from USL League One. Memphis 901 FC folded.