Conferences · 1972–1998 · no longer active
Sioux Interstate
27
Seasons
1972–1998
4
Members, last season
19
Most titles
Sioux City Heelan
7
Programs all-time
1998 · final standings
| Team | Conf | Overall | Rating | |
|---|---|---|---|---|
| 1 | 4ASioux City HeelanChamp | 3-0 | 8-1 | 45.4 #8 |
| 2 | 4ASioux City North | 2-1 | 8-2 | 45.1 #9 |
| 3 | 4ASioux City East | 1-2 | 2-7 | 25.6 #28 |
| 4 | 4ASioux City West | 0-3 | 3-5 | 23.4 #34 |
Conference titles
| Sioux City Heelan 1973, 1974, 1975, 1976, 1977, 1978, 1980, 1982, 1983, 1987, 1988, 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1998 | 19 |
| Sioux City East 1972, 1979, 1984, 1985, 1986, 1989, 1992 | 7 |
| Sioux City North 1981, 1983 | 2 |
| SF Washington SD 1982 | 1 |
Members
| Sioux City East | 1972–1998 · 27 yrs |
| Sioux City Heelan | 1972–1998 · 27 yrs |
| Sioux City North | 1972–1998 · 27 yrs |
| Sioux City West | 1972–1998 · 27 yrs |
| SF Lincoln SD | 1982 · 1 yrs |
| SF O'Gorman SD | 1982 · 1 yrs |
| SF Washington SD | 1982 · 1 yrs |
Season by season
| Season | Champion | Conf record | Overall | Members |
|---|---|---|---|---|
| 1998 | Sioux City Heelan | 3-0 | 8-1 | 4 |
| 1997 | Sioux City Heelan | 3-0 | 3-1 | 4 |
| 1996 | Sioux City Heelan | 3-0 | 5-1 | 4 |
| 1995 | Sioux City Heelan | 3-0 | 3-1 | 4 |
| 1994 | Sioux City Heelan | 3-0 | 3-0 | 4 |
| 1993 | Sioux City Heelan | 3-0 | 6-1 | 4 |
| 1992 | Sioux City East | 3-0 | 4-1 | 4 |
| 1991 | Sioux City Heelan | 3-0 | 8-1 | 4 |
| 1990 | Sioux City Heelan | 3-0 | 5-2 | 4 |
| 1989 | Sioux City East | 3-0 | 5-1 | 4 |
| 1988 | Sioux City Heelan | 3-0 | 6-3 | 4 |
| 1987 | Sioux City Heelan | 3-0 | 4-2 | 4 |
| 1986 | Sioux City East | 3-0 | 4-1 | 4 |
| 1985 | Sioux City East | 3-0 | 5-1 | 4 |
| 1984 | Sioux City East | 3-0 | 8-1 | 4 |
| 1983 | Sioux City Heelan, Sioux City North | 2-0 | 5-1 | 4 |
| 1982 | Sioux City Heelan, SF Washington SD | 1-0 | 6-0 | 7 |
| 1981 | Sioux City North | 2-0 | 2-0 | 4 |
| 1980 | Sioux City Heelan | 2-0 | 4-1 | 4 |
| 1979 | Sioux City East | 1-0 | 3-1 | 4 |
| 1978 | Sioux City Heelan | 4-0 | 5-1 | 4 |
| 1977 | Sioux City Heelan | 3-0 | 6-1 | 4 |
| 1976 | Sioux City Heelan | 3-0 | 6-1 | 4 |
| 1975 | Sioux City Heelan | 3-0 | 7-1 | 4 |
| 1974 | Sioux City Heelan | 3-0 | 4-1 | 4 |
| 1973 | Sioux City Heelan | 2-0 | 3-1 | 4 |
| 1972 | Sioux City East | 2-0 | 4-1 | 4 |