| Code | Team Name |
|---|---|
| CDC | CD Chivas USA |
| CHI | Chicago Fire |
| CMB | Columbus Crew |
| COL | Colorado Rapids |
| DAL | FC Dallas |
| DCU | DC United |
| HOU | Houston Dynamo |
| KCW | Kansas City Wizards |
| LAG | Los Angeles Galaxy |
| NER | New England Revolution |
| NRB | New York Red Bulls |
| PHI | Philadelphia (2010 expansion team) |
| RSL | Real Salt Lake |
| SEA | Seattle Sounders FC (2009 expansion team) |
| SJE | San Jose Earthquakes (2008 expansion team) |
| TOR | Toronto FC |