2025 Compare Cities Health:
Castro Valley, CA vs Boulder, CO

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Highlights
- There are 322 physicians per 100,000 people in Boulder.
- There are 226 physicians per 100,000 people in Castro Valley.
- The US average is 210 physicians per 100,000 people.
 Castro Valley, CABoulder, COUnited States
 Air Quality (100=best)  Unlock74.158.4
 Water Quality (100=best)32  Unlock55
 Superfund Sites (100=best)  Unlock87.786.9
 Physicians per Cap.226  Unlock210
 Health Cost  Unlock94100
   (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 Boulder    55 Reviews

Outside of the university, Boulder had a very distinctive "wealthy hippy" feel. A lot of alternative medicine and a matching ethos. This is changing some among my  More

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We moved here from Texas about 4 years ago and love it here! The amazing sense of community and high regard for the environment are two of the main reasons we love  More

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Over 5 years ago

Most people do much worse than Boulder. I'm the most critical person I've ever met who is never happy or satisfied -- so that's a pretty huge compliment.   More

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