2025 Compare Cities People:
Castle Rock, CO vs Redwood City, CA

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Highlights
- Redwood City is 0% more densely populated than Castle Rock.
- People are 13.4% less likely to be married in Redwood City.
- The Median Age is 1.3 years older in Redwood City.
 Castle Rock, CORedwood City, CAUnited States
 Population  Unlock83,905329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock3738.4
 space3
 Population - 201048,793  Unlock309,327,143
 Population - 2000  Unlock75,402285,036,114
 Population - 19908,708  Unlock251,960,433
 Pop. 2000 to Now  Unlock12.0%15.6%
 Pop. 1990 to Now710.4%  Unlock30.8%
 space4
 Population Density  Unlock4,355.193.4
 Land Area34.3  Unlock3,531,905.4
 Water Area  Unlock15.4264,836.8
 space
 Est. Total Population By Age
 Castle Rock, CORedwood City, CAUnited States
 Age 0 to 47.4%  Unlock5.9%
 Age 5 to 9  Unlock6.1%6.1%
 Age 10 to 147.2%  Unlock6.6%
 Age 15 to 17  Unlock3.6%3.9%
 Age 18 to 204.1%  Unlock4.0%
 Age 21 to 24  Unlock4.1%5.2%
 Age 25 to 3412.9%  Unlock13.8%
 Age 35 to 44  Unlock15.6%12.9%
 Age 45 to 5414.3%  Unlock12.6%
 Age 55 to 59  Unlock6.3%6.7%
 Age 60 to 644.7%  Unlock6.3%
 Age 65 to 74  Unlock7.7%9.6%
 Age 75 to 843.0%  Unlock4.5%
 Age 85 and over  Unlock1.9%1.9%
 space1
 Race
 Castle Rock, CORedwood City, CAUnited States
 White81.6%  Unlock59.4%
 Black  Unlock1.9%12.2%
 Asian2.0%  Unlock5.6%
 Native American  Unlock0.3%0.6%
 Hawaiian, Pacific Islander0.2%  Unlock0.2%
 Other  Unlock0.5%0.4%
 Two or More Races3.8%  Unlock3.2%
 Hispanic  Unlock35.3%18.4%
 space2
 Marriage & Family
 Castle Rock, CORedwood City, CAUnited States
 Married Population62.5%  Unlock49.8%
     Currently Married  Unlock52.2%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock45.9%50.2%
 Never Married24.5%  Unlock33.8%
 Divorced  Unlock8.3%10.8%
 Widowed3.0%  Unlock5.6%
 space5
 Household Size  Unlock2.742.60
 Households24,867  Unlock124,010,992
 Family Households  Unlock20,16480,755,759
     Married couple, w/children48.9%  Unlock30.5%
     Married couple, no children  Unlock43.1%42.9%
 Non Family Households5,755  Unlock43,255,233
     Single householder, w/children  Unlock11.5%15.8%
     Single householder, no children5.1%  Unlock10.8%
Reviews for Castle Rock    12 Reviews

My fiance and I moved here in 2018 shortly after finishing college. I work in Colorado Springs and she works in the Denver area, so Castle Rock was practically our only  More

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Over 7 years ago

I have always been mobile for my career, until I moved to Castle Rock. I've lived in in multiple cities in the Midwest including Chicago and have visited nearly every  More

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Over 11 years ago

we have four seasons, and the rockies are only two hrs.away. so for the outdoors enthusist sking or hiking is like no other place you have been or seen it is hard to  More

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Reviews for Redwood City    11 Reviews

(Caveating everything with "it's Bay Area prices") Redwood City is a large sprawling town where you can find just about anything you're looking for. There's great  More

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The entire Bay Area is ridiculous. You can't compare it to other areas. RWC is reasonably cheap for the area. I pay $5K for a rental townhouse in one of the many  More

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Lovely weather. Safe place to live (I live in Redwood Shores). The only thing that keeps this place from being 5 stars is the cost of housing. When you have to pay an  More

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