Milestones
Formed: July 26, 19381Pioneer Loop Seeks Eighth Entry, AP via The Desert News, Jul. 28, 1938
Status: Active
First Games: May 2, 19392Indians Take Slugfest From Boise Pilots In Pioneer League Inaugural, Lewiston Morning Tribune, May 3, 1939
Seasons: 87 (as of 2026)
States & Provinces: CA, MT, OR, UT, WA, AL, BC
Leadership
Attendance
Trophy Case
Pioneer League Franchise List
| Franchise | Years Active | Pioneer League Champions |
|---|---|---|
| Billings Mustangs | 1948-1963 | 1950-1957-1959-1962 |
| Billings Mustangs | 1969-Present | 1972-1973-1978-1983-1992-1993-1994-1997-2001-2003-2014 |
| Boise Braves | 1955-1963 | 1956-1958-1960 |
| Boise Hawks | 2021-Present | None |
| Boise Pilots | 1939-1951 & 1954 | None |
| Boise Yankees | 1952-1953 | None |
| Butte Copper Kings | 1978-1985 & 1987-2000 | 1981 |
| Caldwell Cubs | 1967-1971 | None |
| Calgary Cardinals | 1977-1978 | None |
| Calgary Expos | 1979-1984 | None |
| Casper Ghosts | 2008-2011 | None |
| Casper Rockies | 2001-2007 | None |
| Gate City Pioneers | 1990 | None |
| Glacier Range Raiders | 2022-Present | None |
| Grand Junction Rockies | 2012-2022 | None |
| Great Falls Dodgers | 1984-2002 | 1988-1989-1990-2002 |
| Great Falls Electrics | 1948-1963 | 1951-1954-1961 |
| Great Falls Giants | 1969-1983 | 1971-1975-1976 |
| Great Falls Voyagers | 2008-Present | 2008-2011-2018 |
| Great Falls White Sox | 2003-2007 | None |
| Helena Brewers | 1987-2000 & 2003-2018 | 1995-1996-2010 |
| Helena Gold Sox | 1984-1986 | 1984 |
| Helena Phillies | 1978-1983 | None |
| Idaho Falls A's | 1982-1984 | None |
| Idaho Falls Angels | 1966-1981 | 1970-1974 |
| Idaho Falls Braves | 1986-1991 & 1993-1999 | 1998 |
| Idaho Falls Chukars | 2004-Present | 2013 |
| Idaho Falls Eagles | 1985 | None |
| Idaho Falls Gems | 1992 | None |
| Idaho Falls Padres | 2000-2003 | 2000 |
| Idaho Falls Russets | 1940-1942 & 1946-1961 | 1952 |
| Idaho Falls Yankees | 1962-1965 | 1963 |
| Lethbridge Black Diamonds | 1996-1999 | 1999 |
| Lethbridge Dodgers | 1975-1983 | 1977-1979-1980 |
| Lethbridge Mounties | 1992-1995 | None |
| Long Beach Coast | 2026-Present | None |
| Magic Valley Cowboys | 1952-1958 & 1961-1966 & 1968-1971 | 1955 |
| Medicine Hat A's | 1977 | None |
| Medicine Hat Blue Jays | 1978-2002 | 1982 |
| Missoula Osprey | 1999-2019 | 1999-2006-2012-2015 |
| Missoula PaddleHeads | 2020-Present | None |
| Missoula Timberjacks | 1956-1960 | None |
| Modesto Roadsters | 2026-Present | None |
| Oakland Ballers | 2024-Present | None |
| Ogden Dodgers | 1966-1973 | 1966-1967-1968-1969 |
| Ogden Raptors | 1994-Present | 2017 |
| Ogden Reds | 1939-1942 & 1946-1955 | 1940-1941 |
| Ogden Spikers | 1974 | None |
| Orem Owlz | 2005-2020 | 2005-2007-2009-2016 |
| Pocatello A's | 1957-1959 | None |
| Pocatello Bannocks in Pioneer League | 1952-1956 | None |
| Pocatello Bannocks | 1961 | None |
| Pocatello Cardinals | 1939-1942 & 1946-1951 | 1942-1949 |
| Pocatello Chiefs | 1962-1965 | None |
| Pocatello Gems | 1984-1985 | None |
| Pocatello Giants | 1960 | None |
| Pocatello Giants | 1987-1989 | None |
| Pocatello Pioneers | 1991 | None |
| Pocatello Posse | 1993 | None |
| Provo Angels | 2001-2004 | 2004 |
| Rocky Mountain Vibes | 2019-2025 | None |
| Salt Lake City Bees | 1939-1942 & 1946-1957 | 1946-1953 |
| Salt Lake City Bees | 1969 | None |
| Salt Lake City Giants | 1967-1969 | None |
| Salt Lake Trappers | 1985-1992 | 1985-1986-1987-1991 |
| Travel Team | 2026-Present | None |
| Treasure Valley Cubs | 1964-1966 | 1964-1965 |
| Twin Falls Cowboys | 1939-1942 & 1946-1951 | 1939-1947-1948 |
| Yuba-Sutter High Wheelers | 2024-Present | None |
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