| 2020 | Peoria Chiefs | Midw | - | 0 | 0 | 0 | | -- | 0 | 0 | 0 | Erick Almonte | | 0 | 0 | Dozer Park | no info |
| 2019 | Peoria Chiefs | Midw | Western | 139 | 54 | 85 | .388 | 27.0 | 563 | 713 | -150 | Erick Almonte | | 198,545 | 0 | Dozer Park | dnq |
| 2018 | Peoria Chiefs | Midw | Western | 139 | 76 | 63 | .547 | 4.5 | 601 | 583 | 18 | Chris Swauger | | 208,275 | 0 | Dozer Park | Lost in Finals |
| 2017 | Peoria Chiefs | Midw | Western | 139 | 69 | 70 | .496 | 10.5 | 581 | 586 | -5 | Chris Swauger | | 212,659 | 0 | Dozer Park | Lost in 1st Round |
| 2016 | Peoria Chiefs | Midw | Western | 139 | 73 | 66 | .525 | 12.5 | 602 | 571 | 31 | Joe Kruzel | | 230,277 | 0 | Dozer Park | Lost in 1st Round |
| 2015 | Peoria Chiefs | Midw | Western | 138 | 75 | 63 | .543 | 13.0 | 569 | 535 | 34 | Joe Kruzel | | 225,089 | 0 | Dozer Park | Lost in Semi-Finals |
| 2014 | Peoria Chiefs | Midw | Western | 139 | 72 | 67 | .518 | 18.5 | 555 | 570 | -15 | Joe Kruzel | | 217,632 | 0 | O'Brien Field | dnq |
| 2013 | Peoria Chiefs | Midw | Western | 137 | 68 | 69 | .496 | 19.5 | 573 | 546 | 27 | Dann Bilardello | | 208,616 | 0 | O'Brien Field | dnq |
| 2012 | Peoria Chiefs | Midw | Western | 138 | 63 | 75 | .457 | 14.5 | 598 | 658 | -60 | Casey Kopitzke | | 190,244 | 0 | O'Brien Field | dnq |
| 2011 | Peoria Chiefs | Midw | Western | 139 | 60 | 79 | .432 | 22.0 | 569 | 649 | -80 | Casey Kopitzke | | 187,915 | 0 | O'Brien Field | dnq |
| 2010 | Peoria Chiefs | Midw | Western | 137 | 71 | 66 | .518 | 11.5 | 635 | 630 | 5 | Casey Kopitzke | | 203,558 | 0 | O'Brien Field | dnq |
| 2009 | Peoria Chiefs | Midw | Western | 138 | 81 | 57 | .587 | -- | 701 | 555 | 146 | Marty Pevey | | 219,168 | 0 | O'Brien Field | Lost in 1st Round |
| 2008 | Peoria Chiefs | Midw | Western | 138 | 60 | 78 | .435 | 18.5 | 574 | 662 | -88 | Ryne Sandberg | | 275,673 | 0 | O'Brien Field | dnq |
| 2007 | Peoria Chiefs | Midw | Western | 139 | 71 | 68 | .511 | 7.5 | 581 | 618 | -37 | Ryne Sandberg | | 247,426 | 0 | O'Brien Field | dnq |
| 2006 | Peoria Chiefs | Midw | Western | 139 | 75 | 64 | .540 | 4.0 | 564 | 567 | -3 | Jody Davis | | 235,031 | 0 | O'Brien Field | Lost in 1st Round |
| 2005 | Peoria Chiefs | Midw | Western | 140 | 68 | 72 | .486 | 8.5 | 695 | 708 | -13 | Julio Garcia | | 256,612 | 0 | O'Brien Field | dnq |
| 2004 | Peoria Chiefs | Midw | Western | 139 | 75 | 64 | .540 | 8.0 | 759 | 670 | 89 | Joseph Cunningham | | 211,598 | 0 | O'Brien Field | Lost in 1st Round |
| 2003 | Peoria Chiefs | Midw | Western | 138 | 65 | 73 | .471 | 11.0 | 571 | 558 | 13 | Joseph Cunningham | | 246,370 | 0 | O'Brien Field | dnq |
| 2002 | Peoria Chiefs | Midw | Western | 138 | 85 | 53 | .616 | -- | 671 | 486 | 185 | Danny Sheaffer | | 254,407 | 0 | O'Brien Field | League Champions |
| 2001 | Peoria Chiefs | Midw | Western | 138 | 57 | 81 | .413 | 31.0 | 599 | 761 | -162 | Joe Hall | | 144,772 | 0 | Pete Vonachen Stadium at Meinen Field | dnq |
| 2000 | Peoria Chiefs | Midw | - | 137 | 63 | 74 | .460 | -- | 590 | 665 | -75 | Tom Lawless | | 0 | 0 | Pete Vonachen Stadium at Meinen Field | dnq |
| 1999 | Peoria Chiefs | Midw | Central | 139 | 63 | 76 | .453 | 16.0 | 641 | 748 | -107 | Brian Rupp | | 150,254 | 0 | Pete Vonachen Stadium at Meinen Field | dnq |
| 1998 | Peoria Chiefs | Midw | Central | 140 | 72 | 68 | .514 | -- | 748 | 715 | 33 | Jeff Shireman | | 154,910 | 0 | Pete Vonachen Stadium at Meinen Field | Lost in 1st Round |
| 1997 | Peoria Chiefs | Midw | Central | 139 | 70 | 69 | .504 | 6.0 | 662 | 746 | -84 | Joseph Cunningham | | 148,585 | 0 | Pete Vonachen Stadium at Meinen Field | dnq |
| 1996 | Peoria Chiefs | Midw | Central | 136 | 79 | 57 | .581 | -- | 696 | 533 | 163 | Roy Silver | | 187,283 | 0 | Pete Vonachen Stadium at Meinen Field | Lost in First Round |
| 1995 | Peoria Chiefs | Midw | Western | 134 | 62 | 72 | .463 | 12.0 | 534 | 605 | -71 | Roy Silver | | 195,056 | 0 | Pete Vonachen Stadium at Meinen Field | dnq |
| 1994 | Peoria Chiefs | Midw | Southern | 138 | 68 | 70 | .493 | 8.5 | 697 | 698 | -1 | Steve Roadcap | | 176,703 | 0 | Pete Vonachen Stadium at Meinen Field | dnq |
| 1993 | Peoria Chiefs | Midw | Southern | 138 | 59 | 79 | .428 | 23.0 | 578 | 644 | -66 | Steve Roadcap | | 100,811 | 0 | Pete Vonachen Stadium at Meinen Field | dnq |
| 1992 | Peoria Chiefs | Midw | Southern | 136 | 62 | 74 | .456 | 28.5 | 611 | 625 | -14 | Steve Roadcap | | 172,560 | 0 | Pete Vonachen Stadium at Meinen Field | dnq |
| 1991 | Peoria Chiefs | Midw | Southern | 138 | 62 | 76 | .449 | 18.5 | 577 | 678 | -101 | Bill Hayes | | 212,159 | 0 | Meinen Field | dnq |
| 1990 | Peoria Chiefs | Midw | Southern | 137 | 55 | 82 | .401 | 34.5 | 532 | 610 | -78 | Greg Mahlberg | | 195,671 | 0 | Meinen Field | dnq |
| 1989 | Peoria Chiefs | Midw | Southern | 139 | 80 | 59 | .576 | 1.0 | 572 | 477 | 95 | Brad Mills | | 225,757 | 0 | Meinen Field | dnq |
| 1988 | Peoria Chiefs | Midw | Southern | 140 | 70 | 70 | .500 | 17.0 | 519 | 513 | 6 | Jim Tracy | | 207,294 | 0 | Meinen Field | dnq |
| 1987 | Peoria Chiefs | Midw | Southern | 140 | 71 | 69 | .507 | 23.0 | 633 | 617 | 16 | Jim Tracy | | 195,832 | 0 | Meinen Field | dnq |
| 1986 | Peoria Chiefs | Midw | Southern | 140 | 77 | 63 | .550 | 10.0 | 654 | 619 | 35 | Pete Mackanin | | 179,183 | 0 | Meinen Field | Lost in Finals |
| 1985 | Peoria Chiefs | Midw | Southern | 140 | 75 | 65 | .536 | -- | 653 | 571 | 82 | Pete Mackanin | | 165,053 | 0 | Meinen Field | Lost in Finals |
| 1984 | Peoria Chiefs | Midw | Southern | 139 | 66 | 73 | .475 | 4.0 | 598 | 622 | -24 | Joe Maddon | | 116,473 | 0 | Meinen Field | dnq |
| 1983 | Peoria Suns | Midw | Southern | 139 | 54 | 85 | .388 | 26.0 | 598 | 721 | -123 | Joe Coleman | | 84,765 | 0 | Meinen Field | dnq |
| 38 record(s) |