After the 2010 season, the USL Second Division was merged with the USL First Division to create the USL Pro.
Western Conference:Austin Bold FC | Colorado Springs Switchbacks | El Paso Locomotive FC | FC Tulsa | Fresno FC | Las Vegas Lights FC | LA Galaxy II | New Mexico United | Oklahoma City Energy FC | Orange County SC | Phoenix Rising FC | Portland Timbers 2 | Real Monarchs | Reno 1868 FC | Rio Grande Valley FC Toros | Sacramento Republic | San Antonio FC | Tacoma Defiance
Future clubs: Monterey Bay FC | Queensboro FC | Rhode Island FC
Former clubs: FC Cincinnati | Nashville FC | Penn FC | Richmond Kickers | Toronto FC II
Related: United Soccer League | USL League 1 | USL League 2United Soccer Leagues (USL First Division | USL Second Division)