| 2013 (5 teams) | Albuquerque | Chattanooga | Rancho Cucamonga | Great Lakes | | Ogden | | |
| 2012 (7 teams) | Albuquerque | Chattanooga | Rancho Cucamonga | Great Lakes | | Ogden, Dodgers | Dodgers | |
| 2011 (7 teams) | Albuquerque | Chattanooga | Rancho Cucamonga | Great Lakes | | Dodgers, Ogden | Dodgers | |
| 2010 (7 teams) | Albuquerque | Chattanooga | Inland Empire | Great Lakes | | Dodgers, Ogden | Dodgers | |
| 2009 (7 teams) | Albuquerque | Chattanooga | Inland Empire | Great Lakes | | Ogden, Dodgers | Dodgers | |
| 2008 (7 teams) | Las Vegas | Jacksonville | Inland Empire | Great Lakes | | Ogden, Dodgers | Dodgers | |
| 2007 (7 teams) | Las Vegas | Jacksonville | Inland Empire | Great Lakes | | Dodgers, Ogden | Dodgers | |
| 2006 (7 teams) | Las Vegas | Jacksonville | Vero Beach | Columbus | | Ogden, Dodgers | Dodgers | |
| 2005 (7 teams) | Las Vegas | Jacksonville | Vero Beach | Columbus | | Dodgers, Ogden | Dodgers | |
| 2004 (8 teams) | Las Vegas | Jacksonville | Vero Beach | Columbus | | Dodgers, Ogden | Dodgers 1, Dodgers 2 | |
| 2003 (8 teams) | Las Vegas | Jacksonville | Vero Beach | South Georgia | | Ogden, Dodgers | Dodgers 1, Dodgers 2 | |
| 2002 (8 teams) | Las Vegas | Jacksonville | Vero Beach | South Georgia | | Great Falls, Dodgers | Dodgers 2, Dodgers 1 | |
| 2001 (7 teams) | Las Vegas | Jacksonville | Vero Beach | Wilmington | | Great Falls, Dodgers | Dodgers | |
| 2000 (7 teams) | Albuquerque | San Antonio | San Bernardino, Vero Beach | | Yakima | Great Falls | Dodgers | |
| 1999 (8 teams) | Albuquerque | San Antonio | San Bernardino, Vero Beach | | Yakima | Great Falls | Dodgers 2, Dodgers 1 | |
| 1998 (8 teams) | Albuquerque | San Antonio | San Bernardino, Vero Beach | | Yakima | Great Falls | Dodgers 1, Dodgers 2 | |
| 1997 (10 teams) | Albuquerque | San Antonio | San Bernardino, Vero Beach | Savannah | Yakima | Great Falls | Dodgers 1, Dodgers 2 | Adelaide |
| 1996 (9 teams) | Albuquerque | San Antonio | San Bernardino, Vero Beach | Savannah | Yakima | Great Falls | Dodgers 2, Dodgers 1 | |
| 1995 (8 teams) | Albuquerque | San Antonio | Vero Beach, San Bernardino | | Yakima | Great Falls | Dodgers 1, Dodgers 2 | |
| 1994 (8 teams) | Albuquerque | San Antonio | Vero Beach, Bakersfield | | Yakima | Great Falls | Dodgers 1, Dodgers 2 | |
| 1993 (7 teams) | Albuquerque | San Antonio | Vero Beach, Bakersfield | | Yakima | Great Falls | Dodgers 1 | |
| 1992 (9 teams) | Albuquerque | San Antonio | Vero Beach, Bakersfield | | Yakima | Great Falls, Dodgers | Dodgers 2, Dodgers 1 | |
| 1991 (8 teams) | Albuquerque | San Antonio | Vero Beach, Bakersfield | | Yakima | Dodgers, Great Falls | Dodgers | |
| 1990 (9 teams) | Albuquerque | San Antonio | Bakersfield, Vero Beach | | Yakima | Great Falls, Dodgers | San Pedro de Macoris Dodgers, Cibao Dodgers | |
| 1989 (8 teams) | Albuquerque | San Antonio | | Vero Beach, Bakersfield | Salem | Great Falls, Dodgers | Dodgers | |
| 1988 (7 teams) | Albuquerque | San Antonio | | Vero Beach, Bakersfield | Salem | Dodgers, Great Falls | | |
| 1987 (6 teams) | Albuquerque | San Antonio | | Bakersfield, Vero Beach | | Dodgers, Great Falls | | |
| 1986 (6 teams) | Albuquerque | San Antonio | | Vero Beach, Bakersfield | | Great Falls, Dodgers | | |
| 1985 (6 teams) | Albuquerque | San Antonio | | Bakersfield, Vero Beach | | Dodgers, Great Falls | | |
| 1984 (6 teams) | Albuquerque | San Antonio | | Bakersfield, Vero Beach | | Great Falls, Dodgers | | |
| 1983 (6 teams) | Albuquerque | San Antonio | | Lodi, Vero Beach | | Dodgers, Lethbridge | | |
| 1982 (5 teams) | Albuquerque | San Antonio | | Lodi, Vero Beach | | Lethbridge | | |
| 1981 (5 teams) | Albuquerque | San Antonio | | Lodi, Vero Beach | | Lethbridge | | |
| 1980 (5 teams) | Albuquerque | San Antonio | | Vero Beach, Lodi | | Lethbridge | | |
| 1979 (5 teams) | Albuquerque | San Antonio | | Clinton, Lodi | | Lethbridge | | |
| 1978 (5 teams) | Albuquerque | San Antonio | | Lodi, Clinton | | Lethbridge | | |
| 1977 (6 teams) | Albuquerque | San Antonio | | Clinton, Lodi | | Lethbridge | | Dodgers |
| 1976 (6 teams) | Albuquerque | Waterbury | | Danville, Lodi | Bellingham | | | Dodgers |
| 1975 (6 teams) | Albuquerque | Waterbury | | Bakersfield, Danville | Bellingham | | | Dodgers |
| 1974 (6 teams) | Albuquerque | Waterbury | | Orangeburg, Bakersfield | Bellingham | | | Dodgers |
| 1973 (7 teams) | Albuquerque | Waterbury | | Daytona Beach, Bakersfield | Bellingham | Ogden | | Dodgers |
| 1972 (7 teams) | Albuquerque | El Paso | | Bakersfield, Daytona Beach | Spokane | Ogden | | Dodgers |
| 1971 (7 teams) | Spokane | Albuquerque | | Bakersfield, Daytona Beach | Medford | Ogden | | Dodgers |
| 1970 (7 teams) | Spokane | Albuquerque | | Daytona Beach, Bakersfield | Medford | Ogden | | Dodgers |
| 1969 (7 teams) | Spokane | Albuquerque | | Bakersfield, Daytona Beach | Rogue Valley | Ogden | | Dodgers |
| 1968 (7 teams) | Spokane | Albuquerque | | Daytona Beach, Bakersfield | Tri-City | Ogden | | Dodgers |
| 1967 (7 teams) | Spokane | Albuquerque | | Dubuque, Santa Barbara | Tri-City | Ogden | | Dodgers |
| 1966 (7 teams) | Spokane | Albuquerque | | Santa Barbara, Jamestown | Tri-City | Ogden | | Dodgers |
| 1965 (7 teams) | Spokane | Albuquerque | | Salem, St. Petersburg, Santa Barbara | | Pocatello | | Dodgers |
| 1964 (9 teams) | Spokane | Albuquerque | | Salisbury, Santa Barbara, St. Petersburg, Grand Forks, Salem | | Pocatello | | Dodgers |
| 1963 (8 teams) | Spokane | Albuquerque | | Salisbury, Santa Barbara, Salem, St. Petersburg, Great Falls | | | | Dodgers |
| 1962 (10 teams) | Spokane, Omaha | | | Greenville | | | | Salem, Great Falls, Reno, Dodgers, Ozark/Andalusia, St. Petersburg, Keokuk/Midwest |
| 1961 (12 teams) | Omaha, Spokane | Atlanta | | Greenville | | | | Reno, Artesia, Kokomo, Salem, Orlando, Great Falls, Dodgers, Panama City |
| 1960 (14 teams) | Spokane, St. Paul, Montreal | Atlanta | | Macon | | | | Green Bay, Dodgers, Reno, Orlando, Panama City, Kokomo, Odessa, Dodgers, Great Falls |
| 1959 (13 teams) | St. Paul, Montreal, Spokane | Victoria | | Macon | | | | Great Falls, Kokomo, Green Bay, Dodgers, Reno, Panama City, Orlando, Odessa |
| 1958 (12 teams) | Spokane, Montreal, St. Paul | Victoria | | Macon, Des Moines | | | | Columbus, Great Falls, Reno, Kokomo, Green Bay, Thomasville |
| 1957 (14 teams) | Montreal, St. Paul | | | Macon, Pueblo | | | | Thomasville, Victoria, Dodgers, Cedar Rapids, Kokomo, Great Falls, Shawnee, Reno, Los Angeles, Bluefield |
| 1956 (14 teams) | St. Paul, Montreal | Fort Worth | | Pueblo, Macon | | | | Hornell, Thomasville, Cedar Rapids, Reno, Portland, Wichita Falls, Kokomo, Shawnee, Great Falls |
| 1955 (15 teams) | Montreal, St. Paul | Fort Worth, Mobile | | Elmira, Pueblo | | | | Thomasville, Bakersfield, Shawnee, Hornell, Newport News, Great Falls, Union City, Cedar Rapids, Asheville |
| 1954 (15 teams) | St. Paul, Montreal | Mobile, Fort Worth | | Elmira, Pueblo | | | | Hornell, Miami, Asheville, Bakersfield, Thomasville, Great Falls, Newport News, Shawnee, Union City |
| 1953 (16 teams) | St. Paul, Montreal | Fort Worth, Mobile | | Elmira, Pueblo | | | | Asheville, Great Falls, Thomasville, Hornell, Union City, Sheboygan, Shawnee, Newport News, Miami, Santa Barbara |
| 1952 (17 teams) | St. Paul, Montreal | Mobile, Fort Worth | | Elmira, Pueblo | | | | Greenwood, Hazard, Ponca City, Great Falls, Lancaster, Santa Barbara, Newport News, Valdosta, Hornell, Sheboygan, Miami |
| 1951 (19 teams) | Montreal, St. Paul | Fort Worth, Mobile | | Pueblo, Elmira | | | | Sheboygan, Billings, Bisbee-Douglas, Asheville, Valdosta, Greenwood, Santa Barbara, Ponca City, Miami, Newport News, Hazard, Lancaster, Hornell |
| 1950 (24 teams) | Montreal, Hollywood, St. Paul | Mobile, Fort Worth | | Greenville, Elmira, Pueblo | | | | Asheville, Hornell, Hazard, Trois-Rivieres, Greenwood, Danville, Newport News, Billings, Sheboygan, Miami, Valdosta, Santa Barbara, Bisbee-Douglas, Lancaster, Ponca City, Hazleton |
| 1949 (24 teams) | St. Paul, Hollywood, Montreal | Fort Worth, Mobile | | Pueblo, Greenville | | | | Johnstown, Asheville, Cambridge, Greenwood, Newport News, Danville, Santa Barbara, Lancaster, Sheboygan, Valdosta, Billings, Geneva, Trois-Rivieres, Nashua, Ponca City, Cairo, Miami |
| 1948 (26 teams) | St. Paul, Montreal | Mobile, Fort Worth | | Greenville, Pueblo | | | | Abilene, Lancaster, Nashua, Ponca City, Asheville, Sheboygan, Zanesville, Trois-Rivieres, Newport News, Johnstown, Danville, Olean, Cambridge, Pulaski, Greenwood, Santa Barbara, Medford, Cairo, Idaho Falls, Valdosta |
| 1947 (24 teams) | St. Paul, Montreal | Mobile, Fort Worth | | Greenville, Pueblo | | | | Thomasville, Cambridge, Valdosta, Greenwood, Newport News, Kingston, Pulaski, Nashua, Asheville, Abilene, Olean, Spokane, Ponca City, Danville, Zanesville, Johnstown, Trois-Rivieres, Santa Barbara |
| 1946 (21 teams) | Montreal, St. Paul | Mobile, Fort Worth | | | | | | Thomasville, Asheville, Santa Barbara, Olean, Miami, Daytona Beach, Newport News, Grand Forks, Abilene, Meridian, Zanesville, Trois-Rivieres, Valdosta, Nashua, Johnstown, Cambridge, Danville |
| 1945 (8 teams) | | Montreal, St. Paul | | | | | | Trenton, Newport News, Olean, Mobile, Thomasville, Zanesville |
| 1944 (7 teams) | | St. Paul, Montreal | | | | | | Trenton, Olean, Zanesville, New Orleans, Newport News |
| 1943 (4 teams) | | Montreal | | | | | | New Orleans, Durham, Olean |
| 1942 (9 teams) | | Montreal | | | | | | Johnstown, Santa Barbara, Durham, Dayton, Kingsport, Valdosta, Olean, Lamesa |
| 1941 (14 teams) | | Montreal | | | | | | Olean, Elizabethton Betsy, Newport, Durham, Quebec, Reading, Johnstown, Santa Barbara, Dayton, Grand Rapids, Troy/Tuskegee, Valdosta, Big Spring |
| 1940 (18 teams) | | Montreal | | Elmira | | | | Dayton, Grand Rapids, Nashville, Fayetteville, Bowling Green, Olean, Macon, Anniston, Johnstown, Superior, Bassett, Durham, Americus, Landis, Newport, Greenville |
| 1939 (15 teams) | | Montreal | | Elmira | | | | Greenville, Gloversville-Johnstown, Pine Bluff, Macon, Superior, Nashville, Americus, Paducah, Huntington, Olean, Dayton, Reidsville, Daytona Beach |
| 1938 (11 teams) | | | | Elmira | | | | Pensacola, Cooleemee, Superior, Beatrice, Clinton, Nashville, Winston-Salem, Greenwood, Tallahassee, Dayton |
| 1937 (9 teams) | | Louisville | | Davenport, Elmira | | | | Pocomoke City, Clinton, Knoxville, Greensburg, Americus, Beatrice |
| 1936 (5 teams) | | | | Davenport, Allentown | | | | Jeanerette, Beatrice, Mayfield |
| 1935 (3 teams) | | Sacramento | | Reading/Allentown | | | | Dayton |
| 1934 (1 team) | | | | | | | | Dayton |
| 1933 (1 team) | | | | York | | | | |
| 1932 (2 teams) | | Jersey City | | Hartford | | | | |