2025 Compare Cities People:
Castle Rock, CO vs Rocklin, CA

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Highlights
- Rocklin is 0% more densely populated than Castle Rock.
- People are 7.7% less likely to be married in Rocklin.
- The Median Age is 1.4 years older in Rocklin.
 Castle Rock, CORocklin, CAUnited States
 Population  Unlock70,317329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock37.138.4
 space3
 Population - 201048,793  Unlock309,327,143
 Population - 2000  Unlock36,330285,036,114
 Population - 19908,708  Unlock251,960,433
 Pop. 2000 to Now  Unlock93.1%15.6%
 Pop. 1990 to Now710.4%  Unlock30.8%
 space4
 Population Density  Unlock3,549.693.4
 Land Area34.3  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Castle Rock, CORocklin, CAUnited States
 Age 0 to 47.4%  Unlock5.9%
 Age 5 to 9  Unlock7.2%6.1%
 Age 10 to 147.2%  Unlock6.6%
 Age 15 to 17  Unlock5.0%3.9%
 Age 18 to 204.1%  Unlock4.0%
 Age 21 to 24  Unlock5.5%5.2%
 Age 25 to 3412.9%  Unlock13.8%
 Age 35 to 44  Unlock15.2%12.9%
 Age 45 to 5414.3%  Unlock12.6%
 Age 55 to 59  Unlock6.0%6.7%
 Age 60 to 644.7%  Unlock6.3%
 Age 65 to 74  Unlock8.0%9.6%
 Age 75 to 843.0%  Unlock4.5%
 Age 85 and over  Unlock1.7%1.9%
 space1
 Race
 Castle Rock, CORocklin, CAUnited States
 White81.6%  Unlock59.4%
 Black  Unlock1.7%12.2%
 Asian2.0%  Unlock5.6%
 Native American  Unlock0.4%0.6%
 Hawaiian, Pacific Islander0.2%  Unlock0.2%
 Other  Unlock0.7%0.4%
 Two or More Races3.8%  Unlock3.2%
 Hispanic  Unlock13.9%18.4%
 space2
 Marriage & Family
 Castle Rock, CORocklin, CAUnited States
 Married Population62.5%  Unlock49.8%
     Currently Married  Unlock56.6%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock42.3%50.2%
 Never Married24.5%  Unlock33.8%
 Divorced  Unlock9.1%10.8%
 Widowed3.0%  Unlock5.6%
 space5
 Household Size  Unlock2.862.60
 Households24,867  Unlock124,010,992
 Family Households  Unlock17,66080,755,759
     Married couple, w/children48.9%  Unlock30.5%
     Married couple, no children  Unlock39.2%42.9%
 Non Family Households5,755  Unlock43,255,233
     Single householder, w/children  Unlock8.5%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 Rocklin    11 Reviews

I have had the blessed opportunity to be born and raised in Rocklin, CA. Rocklin is truly one of the best towns to live in, in the sacramento area. It's a clean, smaller  More

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Over 6 years ago

I've lived in the Sacramento vicinity for 12 years, and in Northern California my entire life (I grew up in the San Jose area). The area of Rocklin I am living in is the  More

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Over 14 years ago

seriously? Let me tell you what I have observed since moving here from Gilbert, AZ 3 months ago.I know I am going to take grief for this so go ahead and let it fly,  More

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