| Community Church UCC | Atascadero, California |
| First Congregational UCC | Bakersfield, California |
| First Congregational UCC | Barstow, California |
| Community Church UCC | California City, California |
| Pilgrim UCC | Carlsbad, California |
| Community Congregational UCC | Chula Vista, California |
| Dominguez Samoan Congregational Christian | Compton, California |
| First Congregational UCC | Corona, California |
| Covina Community Church UCC | Covina, California |
| Diamond Bar UCC | Diamond Bar, California |
| First & Saint Paul's UCC | Downey, California |
| First Congregational UCC | Escondido, California |
| Congregational Church of Fullerton, UCC | Fullerton, California |
| First Congregational UCC | Glendale, California |
| Pilgrim Congregational UCC | Hemet, California |
| Highland Congregational UCC | Highland, California |
| Irvine United Congregational Church | Irvine, California |
| La Canada Congregational Church | La Canada, California |
| Hillcrest Congregational UCC | La Habra Heights, California |
| United Church of Christ of La Mesa | La Mesa, California |
| United Church of Lake San Marcos | Lake San Marcos, California |
| Etena Fou Efkas Las Vegas/UCC | Las Vegas, Nevada |
| First Congregational UCC | Las Vegas, Nevada |
| Las Vegas United Church of Christ | Las Vegas, Nevada |
| Mary Magdalene Friends UCC | Las Vegas, Nevada |
| Northwest Community UCC | Las Vegas, Nevada |
| Valley of the Flowers UCC | Lompoc, California |
| Cross Roads Community UCC | Long Beach, California |
| First Congregational UCC | Long Beach, California |
| First Samoan Congregational Christian Church of Long Beach | Long Beach, California |
| Los Altos UCC | Long Beach, California |
| Malamalama Church | Long Beach, California |
| Refiner's Fire Fellowship UCC | Long Beach, California |
| Second Samoan Congregational Church UCC | Long Beach, California |
| Taeao Fou New Beginning Congregational Christian UCC of Los Altos | Long Beach, California |
| Hollywood Independent UCC | Los Angeles, California |
| Los Angeles Filipino American UCC | Los Angeles, California |
| The First Samoan Church of Los Angeles (UCC) | Los Angeles, California |
| Manhattan Beach Community Church UCC | Manhattan Beach, California |
| United Church of Christ | Menifee, California |
| Montebello Plymouth Congregational | Montebello, California |
| Congregational Church of Northridge UCC | Northridge, California |
| First Samoan Congregational Church of Mesa Margarita | Oceanside, California |
| Bloom in the Desert Ministries | Palm Springs, California |
| First Congregational UCC | Pasadena, California |
| Plymouth Congregational UCC | Paso Robles, California |
| Redlands UCC | Redlands, California |
| First Congregational UCC | Riverside, California |
| First Congregational UCC | San Bernardino, California |
| Christian Fellowship Congregational Church of San Diego, United Church of Christ | San Diego, California |
| Kensington Community UCC | San Diego, California |
| Mission Hills UCC | San Diego, California |
| Pioneer Ocean View UCC | San Diego, California |
| United Church of Christ of Paradise Hills | San Diego, California |
| University City United Church UCC | San Diego, California |
| San Dimas Community Church | San Dimas, California |
| United Church of Christ of San Luis Obispo | San Luis Obispo, California |
| Congregational UCC | San Marino, California |
| First Congregational Church | Santa Ana, California |
| UCC in Simi Valley | Simi Valley, California |
| Tehachapi Community Congregational Church, UCC | Tehachapi, California |
| Seaside Community UCC | Torrance, California |
| Church of the Foothills UCC | Ventura, California |
| Fale Ole Faiipu - Omea Samoan Congregation Church UCC | Victorville, California |
| Community Church UCC | Woodland Hills, California |