Original Four Teams: Fort Saskatchewan, Red Deer, Sherwood Park, St. Albert
1990-94: Fort Saskatchewan, Red Deer, Sherwood Park, St. Albert, Grande Prairie, Spruce Grove, Leduc, Lethbridge, Medicine Hat
March 1994: Grande Prairie Saints left .
1994 -95: Fort Saskatchewan, Red Deer, Sherwood Park, St. Albert, Spruce Grove, Leduc, Lethbridge, Medicine Hat
March 1995: Sherwood Park left
June 1995: Airdrie Xtreme, Strathcona Warriors and East Central Chill (Stettler) joined.
1995-96: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge, Medicine Hat, Airdrie, Strathcona, East Central (Stettler)
March 1996: Edmonton (SSAC) joined.
June 1996: Four Edmonton teams SSAC, MLAC, KC, CAC joined; Sherwood Park returned
1996-99: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge. Medicine Hat, Airdrie, Strathcona, East Central (Stettler), SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park
June 1999: Grande Prairie returned; Cranbrook B.C. entered interlock agreement to play exhibition games with the south teams
1999-2001: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge. Medicine Hat, Airdrie, Strathcona, East Central (Stettler), SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie
June 2000: Cranbrook and eight Calgary teams to play an interlock schedule with the south teams only, with AMBHL teams counting these games for points.
June 2001: Cranbrook left; Okotoks Oilers joined; 8 Calgary teams to play an interlock schedule in the AMBHL with south teams.
2001-03: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge. Medicine Hat, Airdrie, Strathcona, East Central (Stettler), SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie, Okotoks
June 2002: Eight Calgary teams left the interlock with the AMBHL (age change).
June 2003: Lloydminster Heat joined.
2003-05: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge. Medicine Hat, Airdrie, Strathcona, East Central (Stettler), SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie, Okotoks, Lloydminster
June 2005: Fort McMurray Ceda Reactor Barons joined.
2005-07: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge. Medicine Hat, Airdrie, Strathcona, East Central (Stettler), SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie, Okotoks, Lloydminster, Fort McMurray
June 2007: Fort McMurray takes leave of absence; East Central Chill (Stettler) and Strathcona left; Calgary (CBHA), Calgary (NEAA), Calgary (NWCAA), Calgary (SWAA), Camrose Kodiaks and Red Deer Rebels joined.
2007-13: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge, Medicine Hat, Airdrie, SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie, Okotoks, Lloydminster, Camrose, Red Deer, Calgary (CBHA), Calgary (NEAA), Calgary (NWCAA), Calgary (SWAA)
June 2013: Okotoks Oilers become Rocky Mountain Raiders
2013-15: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge, Medicine Hat, Airdrie, SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie, Rocky Mountain, Lloydminster, Camrose, Red Deer, Calgary (CBHA), Calgary (NEAA), Calgary (NWCAA), Calgary (SWAA)
June 2015: Red Deer Rebels left
2015-17: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge, Medicine Hat, Airdrie, SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie, Rocky Mountain, Lloydminster, Camrose, Calgary (CBHA), Calgary (NEAA), Calgary (NWCAA), Calgary (SWAA)
June 2017: Rocky Mountain becomes Okotoks
2017-18: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge, Medicine Hat, Airdrie, SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie, Okotoks, Lloydminster, Camrose, Calgary (CBHA), Calgary (NEAA), Calgary (NWCAA), Calgary (SWAA)
June 2018: Camrose left.
2018-20: Fort Saskatchewan, Red Deer, St. Albert, Spruce Grove, Leduc, Lethbridge, Medicine Hat, Airdrie, SSAC Edmonton, MLAC Edmonton, K of C Edmonton, CAC Edmonton, Sherwood Park, Grande Prairie, Okotoks, Lloydminster, Calgary (CBHA), Calgary (NEAA), Calgary (NWCAA), Calgary (SWAA)
