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2026 Compare Cities People:
Castro Valley, CA vs Denver, CO

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Highlights
- Denver is 0% more densely populated than Castro Valley.
- People are 26.1% less likely to be married in Denver.
- The Median Age is 7.6 years younger in Denver.
 Castro Valley, CADenver, COUnited States
 Population  Unlock706,799329,725,481
 Female Population51.4%  Unlock50.5%
 Male Population48.6%  Unlock49.5%
 Median Age  Unlock34.838.4
 space3
 Population - 201060,625  Unlock309,327,143
 Population - 2000  Unlock554,636285,036,114
 Population - 199048,619  Unlock251,960,433
 Pop. 2000 to Now  Unlock32.6%15.6%
 Pop. 1990 to Now33.1%  Unlock30.8%
 space4
 Population Density  Unlock4,610.893.4
 Land Area16.6  Unlock3,531,905.4
 Water Area  Unlock1.6264,836.8
 space
 Est. Total Population By Age
 Castro Valley, CADenver, COUnited States
 Age 0 to 45.1%  Unlock5.9%
 Age 5 to 9  Unlock5.2%6.1%
 Age 10 to 145.5%  Unlock6.6%
 Age 15 to 17  Unlock2.9%3.9%
 Age 18 to 201.9%  Unlock4.0%
 Age 21 to 24  Unlock5.1%5.2%
 Age 25 to 3412.2%  Unlock13.8%
 Age 35 to 44  Unlock16.4%12.9%
 Age 45 to 5414.3%  Unlock12.6%
 Age 55 to 59  Unlock5.1%6.7%
 Age 60 to 647.5%  Unlock6.3%
 Age 65 to 74  Unlock7.3%9.6%
 Age 75 to 844.4%  Unlock4.5%
 Age 85 and over  Unlock1.4%1.9%
 space1
 Race
 Castro Valley, CADenver, COUnited States
 White36.7%  Unlock59.4%
 Black  Unlock8.6%12.2%
 Asian31.2%  Unlock5.6%
 Native American  Unlock0.4%0.6%
 Hawaiian, Pacific Islander0.2%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races4.8%  Unlock3.2%
 Hispanic  Unlock29.4%18.4%
 space2
 Marriage & Family
 Castro Valley, CADenver, COUnited States
 Married Population55.8%  Unlock49.8%
     Currently Married  Unlock39.6%48.0%
 Married but Separated1.3%  Unlock1.8%
 Single Population  Unlock58.8%50.2%
 Never Married29.8%  Unlock33.8%
 Divorced  Unlock11.8%10.8%
 Widowed6.0%  Unlock5.6%
 space5
 Household Size  Unlock2.212.60
 Households22,467  Unlock124,010,992
 Family Households  Unlock148,59980,755,759
     Married couple, w/children35.0%  Unlock30.5%
     Married couple, no children  Unlock39.7%42.9%
 Non Family Households5,775  Unlock43,255,233
     Single householder, w/children  Unlock16.5%15.8%
     Single householder, no children8.5%  Unlock10.8%
Voting
Reviews for Castro Valley    7 Reviews
Ken · Walnut Creek, CA
2015 review of Castro Valley, CA
Over 11 years ago

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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Doug · Castro Valley, CA
Close to the big cities
Over 12 years ago

Kind of rural but close to Oakland and San  More

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Curmudgeon · Castro Valley, CA
Castro Valley Needs to Incorporate
Over 13 years ago

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 Denver    470 Reviews
Spooky · Denver, CO
Denver: It’s Not for Everyone!
Over 4 years ago

During my 25 years in Denver, I’ve witnessed trends found in other metro areas: homeless camps, panhandlers, worsening traffic, increased crime and rapidly appreciating  More

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Beran · Lakewood, CO
Overpriced and extremely overrated.
Over 4 years ago

I've lived in the Denver area for about eight years now. Moved here for college planning to get out as soon as I was done with college, and predictably got stuck  More

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Sanford · Carnegie, PA
Overrated and getting worse every year.
Over 4 years ago

I've lived in the city since I was born (1998) and I just was ready to get out. I'm a Denver native and I am ashamed of my city. I moved to Pittsburgh, Pennsylvania  More

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Learn More About Castro Valley, California
Overview
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Voting
Learn More About Denver, Colorado
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