2025 Compare Cities People:
Aiken, SC vs Castro Valley, CA

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Highlights
- Castro Valley is 0% more densely populated than Aiken.
- People are 15.3% more likely to be married in Castro Valley.
- The Median Age is 4.2 years younger in Castro Valley.
 Aiken, SCCastro Valley, CAUnited States
 Population  Unlock66,324329,725,481
 Female Population53.8%  Unlock50.5%
 Male Population46.2%  Unlock49.5%
 Median Age  Unlock42.438.4
 space3
 Population - 201029,671  Unlock309,327,143
 Population - 2000  Unlock57,292285,036,114
 Population - 199019,872  Unlock251,960,433
 Pop. 2000 to Now  Unlock13.0%15.6%
 Pop. 1990 to Now56.6%  Unlock30.8%
 space4
 Population Density  Unlock3,997.893.4
 Land Area20.9  Unlock3,531,905.4
 Water Area  Unlock0.2264,836.8
 space
 Est. Total Population By Age
 Aiken, SCCastro Valley, CAUnited States
 Age 0 to 44.4%  Unlock5.9%
 Age 5 to 9  Unlock6.1%6.1%
 Age 10 to 146.0%  Unlock6.6%
 Age 15 to 17  Unlock4.3%3.9%
 Age 18 to 205.3%  Unlock4.0%
 Age 21 to 24  Unlock3.5%5.2%
 Age 25 to 3412.0%  Unlock13.8%
 Age 35 to 44  Unlock14.4%12.9%
 Age 45 to 5411.4%  Unlock12.6%
 Age 55 to 59  Unlock7.8%6.7%
 Age 60 to 646.9%  Unlock6.3%
 Age 65 to 74  Unlock10.4%9.6%
 Age 75 to 847.9%  Unlock4.5%
 Age 85 and over  Unlock2.4%1.9%
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 Race
 Aiken, SCCastro Valley, CAUnited States
 White58.2%  Unlock59.4%
 Black  Unlock9.3%12.2%
 Asian2.2%  Unlock5.6%
 Native American  Unlock0.5%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races2.4%  Unlock3.2%
 Hispanic  Unlock16.9%18.4%
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 Marriage & Family
 Aiken, SCCastro Valley, CAUnited States
 Married Population48.4%  Unlock49.8%
     Currently Married  Unlock54.5%48.0%
 Married but Separated3.3%  Unlock1.8%
 Single Population  Unlock44.2%50.2%
 Never Married31.0%  Unlock33.8%
 Divorced  Unlock8.4%10.8%
 Widowed8.5%  Unlock5.6%
 space5
 Household Size  Unlock2.902.60
 Households13,073  Unlock124,010,992
 Family Households  Unlock16,69280,755,759
     Married couple, w/children19.1%  Unlock30.5%
     Married couple, no children  Unlock45.3%42.9%
 Non Family Households5,196  Unlock43,255,233
     Single householder, w/children  Unlock11.2%15.8%
     Single householder, no children12.0%  Unlock10.8%
Reviews for Aiken    34 Reviews

I'm going on 3 years living in Aiken. Moving here not having any family or friends was difficult. I'm thankful for the people I have met who now feel like lifelong  More

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Aiken is a magical place. It is beautiful and historic, has all the amenities, and Hitchcock Woods is a treasure! I feel blessed to have lived in Aiken for 3 years. As a  More

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Aiken is a unique town to visit or live in. I've lived in Toronto, ON Canada, Lynchburg, VA and in Aiken. I am 24 years old and moved here from VA just over two years  More

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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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