| Club | Based in | Founded | Home ground |
|---|---|---|---|
| Alaska Timbers | Anchorage | — | — |
| Carpathia FC | — | 1952 | — |
| Cedar Rapids Rampage United | — | 2016 | — |
| Croatian Eagles | — | 1922 | — |
| Houston FC | Houston | 2016 | — |
| Keene FC | — | 2017 | Wanda R. Smith High School |
| La Máquina FC | Santa Ana | 2011 | — |
| MatSu United FC | — | 2011 | Palmer High School |
| Moreno Valley FC | — | 2015 | — |
| Phoenix Monsoon | Arizona | 2010 | — |
| RWB Adria | Chicago | 1959 | — |