During the second year of operation (1990-1991), there were 65 Clubs in 13 Areas and four Divisions. The following officers led the District: Carol Averill, DTM, District Governor; Chuck Weck, DTM, Educational Lt. Governor; and Kay Starr, DTM, Administrative Lt. Governor. This was the first year for District 12 to achieve Distinguished District Status. The Humorous Contest Contestant, Karlyn Thayer, ATM, Club 3806, placed first at the Regional Conference. Toastmaster of the Year was Violet Gillen, ATM-S, Club 4062. Area Governor of the Year was Marilyn Mitchell, ATM, Area D-3. Division Governor of the Year was Bernice Alexander, ATM, Division A. The membership drive culminated in formation of a "forest of the future" in Fontana. Area Governor Speakoff winner was Marilyn Mitchell, ATM, speaking on ³Pride and Purpose Inspire Performance. District Governor's theme was ³Growth: Challenge of the 90s.

During the third year of operation (1991-1992), there were 67 clubs in 13 Areas and four Divisions. The following officers led the District: Chuck Weck, DTM, District Governor; Kay Starr, DTM, Lt. Governor Education and Training; and Paul McAdam, DTM, Lt. Governor Marketing. District achieved Distinguished District status. The Humorous Contest contestant at Region was Rolland Barnes, DTM, Club 290, and the International Speech contestant was Delmar Gilchrist, DTM, Club 1043. Toastmaster of the Year was Dr. Bettye Underhill, DTM, PDG, Club 1026. Division Governor of the Year was Marilyn Mitchell, DTM, Division D. Area Governor of the Year was George Mitchell, ATM-B, Area D-3. Area Governor Speakoff winner was George Mitchell, ATM-S, speaking on Toastmasters, Unleash Your Potential. District Governor's theme was Success Through Participation.

During the fourth year of operation (1992-1993), there were 70 Clubs in 13 Areas and four Divisions. The following officers led the District: Kay Starr, DTM, District Governor; Sharon McCarthy, DTM, Lt. Governor Education and Training; Marilyn Mitchell, DTM, Lt. Governor Marketing. District achieved Distinguished District status. The Humorous Contest contestant at Region was George Mitchell, DTM, Club 8396; and the International Speech Contestant was Benjamin Chee, ATM, Club 7730. Toastmaster of the Year was George Mitchell, DTM, Club 8396. Division Governor of the Year was Gary Shumway, ATM-S, Division D. Area Governor of the Year was Deepak Ubhayakar, ATM, Area A-2. Area Governor Speakoff winner was Clarice Jones, ATM, speaking on Dynamic Clubs Deliver. District Governor¹s theme was Discover the Star Within You.

During the fifth year of operation (1993-1994), there were 71 Clubs in 13 Areas and four Divisions. The following officers led the District: Ken Averill, DTM, District Governor; Gregory Scott, DTM, Lt. Governor Education and Training; and Bill Cortus, ATM, Lt. Governor Marketing. District achieved Distinguished District status. The Humorous Speech Contest contestant at Region was John Thompson, CTM, Club 7213; and the International Speech Contestant was Dennis Galbraith, CTM, Club 1043. Toastmaster of the Year was Chuck Weck, DTM, PDG, Club 7213. Division Governor of the Year was Bob Palmer, DTM, Division C. Area Governor of the Year was Bert Cooper, ATM, Area D-3. Area Governor speakoff winner was Richard Snyder, ATM-B, Area A-2, speaking on the International President¹s theme "People Building People. The District Governor's theme was "Teamwork, A Plan for Growth.