- Calgro
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- Calico
- Caliente
- California City
- California Hot Springs
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- California Valley
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- Calimesa Mobile Home Ranch
- Calipatria
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- Calla
- Callahan
- Callender
- Calneva
- Calpack
- Calpella
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- Calvada Springs
- Calwa
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- Camanche North Shore
- Camanche Village
- Camarillo
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- Cambria Pines
- Cambria Rock
- Cambrian Park