2025 Compare Cities Health:
Castro Valley, CA vs Union City, CA

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Highlights
- There are 226 physicians per 100,000 people in Union City.
- There are 226 physicians per 100,000 people in Castro Valley.
- The US average is 210 physicians per 100,000 people.
 Castro Valley, CAUnion City, CAUnited States
 Air Quality (100=best)  Unlock59.758.4
 Water Quality (100=best)32  Unlock55
 Superfund Sites (100=best)  Unlock94.386.9
 Physicians per Cap.226  Unlock210
 Health Cost  Unlock104100
   (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 Union City    1 Reviews

Over 19 years ago

Hi, I am looking for a small, friendly town with low crime and friendly people, outdoor activites, mellow, etc. (in the bay area). I am currently hoping to move to  More

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