| Year | Result |
| 2009 | Urbandale 7, Monroe County (Albia) 3 |
| 2008 | Urbandale 10, Davenport Northwest 0 (5 innings) |
| 2007 | Urbandale 6, Boone National 1 |
| 2006 | Davis County (Bloomfield) 5, Davenport Southeast 2 |
| 2005 | Davenport Northwest 5, Urbandale 2 |
| 2004 | Davenport Northwest 4, Urbandale 3 |
| 2003 | North Scott (Eldridge) 9, Boone National 1 |
| 2002 | Grandview (Des Moines) 2, Headid American (Sioux City) 1 |
| 2001 | Davenport East 5, South Des Moines 1 |
| 2000 | Davenport East 9, Monroe County (Albia) 2 |
| 1999 | Fairfield 4, Davenport Northwest 3 |
| 1998 | Mahaska County National (Oskaloosa) 5, Urbandale American 4 |
| 1997 | Davenport North 10, Urbandale National 1 |
| 1996 | Marshalltown National 7, Boone 0 |
| 1995 | Marshalltown National 8, Indianola 1 |
| 1994 | Davenport Northwest 8, Headid American (Sioux City) 1 |
| 1993 | Beaverdale American (Des Moines) 5, Davenport Southwest 0 |
| 1992 | Davenport Emies 5, South Des Moines 4 |
| 1991 | Grandview (Des Moines) 5, Boone 3 |
| 1990 | Indianola 7, Davenport Southeast 0 |
| 1989 | Davenport East 6, Grandview (Des Moines) 2 |
| 1988 | South Des Moines 7, Ottumwa Midwest 1 |
| 1987 | Monroe County (Albia) 5, Davenport East 4 |
| 1986 | Grandview (Des Moines) 13, Urbandale American 3 |
| 1985 | Morningside National (Sioux City) 3, Davenport Northwest 1 |
| 1984 | Ottumwa American 5, Southeast Polk 2 |
| 1983 | Sioux City Westside 4, Fort Des Moines National 0 |
| 1982 | Davenport Emies 6, Ottumwa American 5 |
| 1981 | Davenport Emies 8, Ankeny American 1 |
| 1980 | Grandview National (Des Moines) 8, Ottumwa National 0 |
| 1979 | Davenport Northwest 7, Beaverdale 2 |
| 1978 | West Des Moines East 5, Indianola 3 |
| 1977 | Davenport Emies 5, Ankeny National 2 |
| 1976 | Windsor-Des Moines 10, Boone 1 |
| 1975 | Davenport Southeast 11, Storm Lake 2 |
| 1974 | Davenport Northwest 2, Appanoose County (Centerville) 0 |
| 1973 | Davenport Central 8, Carroll 5 |
| 1972 | Le Mars 3, Ottumwa National 1 |
| 1971 | Ottumwa National 3, Davenport Northwest 1 |
| 1970 | Fort Des Moines 2, Appanoose County (Centerville) 0 |
| 1969 | Beaverdale (Des Moines) 8, Le Mars 0 |
| 1968 | Marshalltown National 2, Ottumwa American 0 |
| 1967 | South Des Moines 2, Carroll 1 |
| 1966 | Beaverdale (Des Moines) 3, Davenport Northwest 2 |
| 1965 | Grandview (Des Moines) 5, Jefferson 2 |
| 1964 | Windsor-Des Moines 11, Ottumwa American 0 |
| 1963 | Sac County 3, Windsor-Des Moines 2 |
| 1962 | Windsor-Des Moines 14, Ottumwa American 0 |
| 1961 | West Des Moines 12, Burlington National 4 |
| 1960 | Burlington American 4, Sac County 3 |
| 1959 | Ottumwa Midwest 4, Sac County 2 |
| 1958 | Davenport Northwest 6, West Des Moines 3 |
| 1957 | Ottumwa American 7, Boone 3 |