• Acalanes Adult Education (925) 935-0170
• Alcoholics Anonymous @ 185 Mayhew Way (925) 939-4155 (24-hr)
• American Camp Association, Northern California Section
• American Red Cross (925) 603-7400 (24-hr)
• Animal Rescue Foundation (ARF) @ 2890 Mitchell Dr., Walnut Creek (925) 256-1273
• Assistance League of Diablo Valley (925) 934-0901, (925) 934-INFO(4636)
• Aspira Foster and Family Services (925) 753-2156
• Barbershop Men's Chorus (925) 938-SONG
• Battered Women's Alternatives (STAND) 1-888-215-5555 (24-hr)
• Chamber of Commerce (925) 934-2007
• Child Abuse Prevention Council (925) 949-9961
• Contact-Care Center
• Contra Costa Commute Alternative Network (commuter information)
• Contra Costa Child Care Council (resource and referrals for parents and child-care providers)
• Contra Costa Farmers' Market
• Contra Costa Historical Society
• Contra Costa Jewish Community Center, 2071 Tice Valley Blvd. Walnut Creek 94595 (925) 938-7800
• Cub Scouts Pack 215 (925) 934-4888
• Diablo Regional Arts Association (925) 932-1731
• Dances of the Pacific (925) 682-1840
• Diablo Art Association (925) 687-2932
• Diablo Mountain Cloggers (925) 937-3877
• Diablo Sailing Club (925) 937-3652
• Diablo Singles Dance Club (925) 820-4299
• Diablo Valley Chinese Cultural Association
• Diablo Valley Foundation for the Aging (925) 945-8040
• Diablo Valley Stamp Club (925) 947-0539
• Diablo Valley Fly Fishermen (925) 256-8542
• Diablo Women's Chorale (925) 682-8112
• Downtown Business Association (925) 933-6778
• East Bay Taiwanese American Community Services Center(925) 943-2291
• Equestrian Association (925) 943-5858
• Equestrian Center of Walnut Creek (925) 939-2929
• Elk's Lodge No 1811@1475 Creekside Dr (925) 935-1811
• Girl Scouts: Walnut Creek Girl Scouts Association
• 4-H Club Information (925) 646-6543
• Festival Opera Association (925) 944-9610
• Fresh Start program to assist the homeless (925) 935-8446
• Friends of the Creek (925) 939-8979
• The Gardens at Heather Farm Assn., Inc (925) 947-1678
• Hispanic Chamber of Commerce (925) 933-2337
• La Leche League (925) 682-8803
• LifeGarden
• League of Women Voters of Diablo Valley
• Lion's Club of Walnut Creek (925) 676-9092
• Lost and Found Pets
• Model Railroad Society (925) 937-1888
• Mount Diablo Mother's Club
• Mt. Diablo Astronomical Society (925) 695-3134
• Mt. Diablo Adult Education (925) 937-1530
• Mt. Diablo Audubon Society (925) 283-8266
• Mt. Diablo Dog Training (925) 933-8774
• Mt. Diablo High School Alumni Association
• Mt. Diablo Interpretive Association @ P.O. Box 346, WC 94597-0346 (925) 927-7222
• Mt. Diablo Peace Center @ 65 Eckley Lane (925) 933-7850
• Multi-League Baseball
• Newcomers Club of Walnut Creek (925) 930-0129 
• Northgate High School Broncos athletic team
• Planned Parenthood @ 1357 Oakland Blvd (925) 935-3010
• Ripsnorter Square Dance Club (925) 935-5450
• Ruth Bancroft Garden 1552 Bancroft Road, (925) 944-9352
• Sons in Retirement, Branch 116
• Sons in Retirement, Branch 146
• Sons in Retirement, Rossmoor Branch 81 (925-256-9879)
• STAND Against Domestic Violence (1-888-215-5555)
• Stroke Support Group of Contra Costa County, Ann Dzuna, (925) 376-6218
• Sustainable Contra Costa
• Sweet Adelines International (925) 687-0520
• Volunteer Caregivers Program (A program of John Muir Health)
• Volunteer Center of Contra Costa County
• Walnut Creek Adult Softball, Inc. (925) 943-1955
• Walnut Creek Aquabears (925) 939-5990
• Walnut Creek Aquanuts (925) 934-4792
• Walnut Creek Chess Club (925) 939-7937
• Walnut Creek Dog Owners Group (WCDOG) (925) 698-5583
• Walnut Creek Education Foundation K-12
• Walnut Creek Girl Scouts Association
• Walnut Creek Historical Society (925) 935-7871
• Walnut Creek Library Foundation
• Walnut Creek Little League (925) 806-8242
• Walnut Creek Open Space Foundation
• Walnut Creek Racquet Club (925) 945-0105
• Walnut Creek Rotary Club
• Walnut Creek Sister Cities International (925) 938-8015
• Walnut Creek Soccer Club (925) 930-0210
• Walnut Creek Tennis (925) 945-0105
• Walnut Creek Wellness Challenge
• Walnut Creek Youth Athletic Association (925) 933-4884
• Walnut Creek Youth Football (925) 944-6512
• Walnut Festival Association (925-935-6766)
• 680 Water Polo
• Walnut Whirlers Folk Dance (925) 228-8598

Note: The views expressed on any page which is linked to a City of Walnut Creek web page are solely those of the author and do not necessarily reflect the views of the City of Walnut Creek or any of its officials or employees.