| Team | Location | Nickname | Owner | Stadium | Weather |
|---|---|---|---|---|---|
| BAL | Baltimore | Sand Crabs | Doug Palmer | LAN Dodger Stadium (2007) | Eastern Seaboard |
| BOW | Bowling Green | Bandits | Michael McFadden | CHA U.S. Cellular Field (2005) | Great Lakes-Northeast |
| BUF | Buffalo | Thunderherd | Mike Monostra | KC Kauffman Stadium (2006) | Great Lakes-Northeast |
| CAN | Canberra | Redbacks | Joel Roberts | HOU Minute Maid Park (2011) | Pacific Northwest |
| COU | Chicago | Cougars | Greg Abcarian | PHI Citizens Bank Park (2011) | Great Lakes-Northeast |
| CSP | Casper | Ghosts | Scott Corless | DET Comerica Park (2002) | Rocky Mountain |
| DTR | Detroit | Rangers | Paul Riegel-Green | LAA Angel Stadium of Anaheim (2009) | Great Lakes-Northeast |
| GTY | Gettysburg | Generals | Brent Cunningham | BAL Oriole Park at Camden Yards (2010) | Eastern Seaboard |
| HAV | Havana | Habaneros | Gerard Milewski | CHN Wrigley Field (2011) | Florida |
| KAT | Kansas | Tornadoes | Mike Neff | TEX Rangers Ballpark in Arlington (2009) | Heartland |
| MAD | Monrovia | Madness | Chris Hartjes | MIN Target Field (2010) | Southern California |
| MCM | Motor City | Marauders | Sean Sweda | SEA Safeco Field (2006) | Great Lakes-Northeast |
| MIN | Minnesota | Snow Bears | Ian Clark & Kevin Greenberg | MIL Miller Park (2003) | Great Lakes-Northeast |
| MOR | Morin Heights | Blues | Jocelyn Labbe | NYN Citi Field (2004) | North |
| NYK | New York | Knights | Noel Steere | COL Coors Field (2011) | Eastern Seaboard |
| ODM | Oaksterdam | Bombers | Alex Campbell | ATL Turner Field (2007) | Northern California |
| PAD | Los Angeles | Devils of Palo Alto | Nelson Lu | OAK Oakland Coliseum (2011) | Northern California |
| PHI | Philadelphia | Phantasm | Rusty Peltz | TOR Rogers Centre (2008) | Eastern Seaboard |
| POR | Portland | Raptors | George Blas | FLA Sun Life Stadium (2010) | Pacific Northwest |
| SDQ | San Diego | Quakes | Larry Selleck | PIT PNC Park (2011) | Southern California |
| SEA | Seattle | Rainiers | Matt Sivertson | SD PETCO Park (2004) | Pacific Northwest |
| TRI | Tri-State | Traffic | Jed Rosenthal | STL Busch Stadium (2011) | Eastern Seaboard |
| WCW | Washtenaw County | Warpath | Todd Morgan | TB Tropicana Field (2009) | Great Lakes-Northeast |
| WMS | Williamstown | Thunder | Andrew Selder | SF AT&T Park (pre-2002) | Great Lakes-Northeast |