| Northern | ||||||||||||||
| Rk | Team | Affiliate | W | L | Pct | Gbl | RF | RA | Manager | Stadium | Attendance | Top Batter | Top Pitcher | Playoffs |
| 1 | Lethbridge Dodgers ** | LAD | 38 | 30 | .559 | -- | 464 | 348 | Gail Henley | Henderson Stadium | 20,656 | Greg Brock (2) | Rich Rodas (1) | League Champions |
| 2 | Calgary Expos | MTL | 34 | 36 | .486 | 5.0 | 395 | 503 | Bob Bailey | Burns Stadium | 37,552 | Fernando Marin (5) | Tony Fadhel (5) | |
| 3 | Great Falls Giants | SF | 32 | 38 | .457 | 7.0 | 451 | 435 | Ernie Rodriguez | Centene Stadium | 54,842 | Rob Deer (7) | Frank Williams (10) | |
| 4 | Medicine Hat Blue Jays | TOR | 27 | 42 | .391 | 11.5 | 388 | 512 | Dennis Holmberg | Athletic Park | 13,343 | Jimmy Waugh (15) | Mark Eichhorn (7) | |
| Southern | ||||||||||||||
| Rk | Team | Affiliate | W | L | Pct | Gbl | RF | RA | Manager | Stadium | Attendance | Top Batter | Top Pitcher | Playoffs |
| 1 | Billings Mustangs | CIN | 43 | 26 | .623 | -- | 360 | 283 | Jim Hoff | Cobb Field | 59,880 | Jeff Jones (8) | Nick Fiorillo (2) | |
| 2 | Helena Phillies | PHI | 43 | 26 | .623 | -- | 521 | 446 | Roly De Armas | Kindrick Field | 23,005 | Joe Bruno (3) | David Mitchell (13) | Lost in Finals |
| 3 | Butte Copper Kings | MIL | 32 | 34 | .485 | 9.5 | 477 | 437 | Tom Gamboa, Ken Richardson | Alumni Coliseum | 28,398 | Bill Schroeder (1) | Brian Meadows (14) | |
| 4 | Idaho Falls Angels | CAL | 25 | 42 | .373 | 17.0 | 414 | 480 | Reuben Rodriguez | McDermott Field | 34,905 | Timothy Collins (10) | Curt Brown (17) | |