2025 Compare Cities Health:
Castro Valley, CA vs Mariposa, CA

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Highlights
- There are 40 physicians per 100,000 people in Mariposa.
- There are 226 physicians per 100,000 people in Castro Valley.
- The US average is 210 physicians per 100,000 people.
 Castro Valley, CAMariposa, CAUnited States
 Air Quality (100=best)  Unlock73.758.4
 Water Quality (100=best)32  Unlock55
 Superfund Sites (100=best)  Unlock92.786.9
 Physicians per Cap.226  Unlock210
 Health Cost  Unlock99100
   (100 = best)
Reviews for Castro Valley    7 Reviews

CURMUDGEON - THANK YOU for your post. The most important part of your comment is your second paragraph. "Hodge-Podge" is the correct word for a lot of Castro  More

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Over 11 years ago

Kind of rural but close to Oakland and San  More

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Castro Valley is the largest unincorporated "city" in the Bay Area. Over the years, several attempts have been made to incorporate, but they have all been defeated at  More

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Reviews for Mariposa    1 Reviews

Over 15 years ago

We've recently moved to Mariposa and are overwhelmed with all the beauty here. The Oaks and wildflowers are amazing. Our visits to Yosemite have been spectacular. The  More

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