| Northern | ||||||||||||||
| Rk | Team | Affiliate | W | L | Pct | Gbl | RF | RA | Manager | Stadium | Attendance | Top Batter | Top Pitcher | Playoffs |
| 1 | Lethbridge Dodgers ** | LAD | 52 | 18 | .743 | -- | 537 | 315 | Gail Henley | Henderson Stadium | 27,044 | Greg Smith (4) | Charles Jones (2) | League Champions |
| 2 | Great Falls Giants | SF | 49 | 21 | .700 | 3.0 | 510 | 354 | Ernie Rodriguez | Centene Stadium | 68,003 | Randy Gomez (3) | Mark Dempsey (1) | |
| 3 | Calgary Expos | MTL | 23 | 46 | .333 | 28.5 | 386 | 422 | Steve Boros | Burns Stadium | 26,317 | Steve Dawes (26) | Bob Baldrick (11) | |
| 4 | Medicine Hat Blue Jays | TOR | 16 | 54 | .229 | 36.0 | 247 | 510 | John McLaren | Athletic Park | 15,700 | Garry Harris (17) | Steven Smith (7) | |
| Southern | ||||||||||||||
| Rk | Team | Affiliate | W | L | Pct | Gbl | RF | RA | Manager | Stadium | Attendance | Top Batter | Top Pitcher | Playoffs |
| 1 | Billings Mustangs | CIN | 44 | 26 | .629 | -- | 455 | 344 | Jim Hoff | Cobb Field | 58,464 | Mike Foote (11) | Mark Bowden (8) | Lost in Finals |
| 2 | Idaho Falls Angels | CAL | 34 | 36 | .486 | 10.0 | 382 | 440 | Reuben Rodriguez | McDermott Field | 37,646 | Tim Krauss (14) | Bob Bastian (3) | |
| 3 | Helena Phillies | PHI | 32 | 38 | .457 | 12.0 | 356 | 413 | Roly De Armas | Kindrick Field | 18,888 | Delano Freeney (22) | Frankie Griffin (12) | |
| 4 | Butte Copper Kings | MIL | 29 | 40 | .420 | 14.5 | 510 | 534 | Ken Richardson | Alumni Coliseum | 29,410 | Gerald Miller (1) | Elmer Cavner (25) | |