2025 Compare Cities People:
Castle Rock, CO vs Naperville, IL

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Highlights
- Naperville is 0% more densely populated than Castle Rock.
- People are 1.1% less likely to be married in Naperville.
- The Median Age is 3.6 years older in Naperville.
 Castle Rock, CONaperville, ILUnited States
 Population  Unlock149,013329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock39.338.4
 space3
 Population - 201048,793  Unlock309,327,143
 Population - 2000  Unlock128,358285,036,114
 Population - 19908,708  Unlock251,960,433
 Pop. 2000 to Now  Unlock15.3%15.6%
 Pop. 1990 to Now710.4%  Unlock30.8%
 space4
 Population Density  Unlock3,839.693.4
 Land Area34.3  Unlock3,531,905.4
 Water Area  Unlock0.6264,836.8
 space
 Est. Total Population By Age
 Castle Rock, CONaperville, ILUnited States
 Age 0 to 47.4%  Unlock5.9%
 Age 5 to 9  Unlock6.5%6.1%
 Age 10 to 147.2%  Unlock6.6%
 Age 15 to 17  Unlock4.9%3.9%
 Age 18 to 204.1%  Unlock4.0%
 Age 21 to 24  Unlock4.2%5.2%
 Age 25 to 3412.9%  Unlock13.8%
 Age 35 to 44  Unlock14.2%12.9%
 Age 45 to 5414.3%  Unlock12.6%
 Age 55 to 59  Unlock7.6%6.7%
 Age 60 to 644.7%  Unlock6.3%
 Age 65 to 74  Unlock8.3%9.6%
 Age 75 to 843.0%  Unlock4.5%
 Age 85 and over  Unlock1.5%1.9%
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 Race
 Castle Rock, CONaperville, ILUnited States
 White81.6%  Unlock59.4%
 Black  Unlock4.3%12.2%
 Asian2.0%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.2%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races3.8%  Unlock3.2%
 Hispanic  Unlock6.5%18.4%
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 Marriage & Family
 Castle Rock, CONaperville, ILUnited States
 Married Population62.5%  Unlock49.8%
     Currently Married  Unlock60.9%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock38.2%50.2%
 Never Married24.5%  Unlock33.8%
 Divorced  Unlock7.0%10.8%
 Widowed3.0%  Unlock5.6%
 space5
 Household Size  Unlock2.752.60
 Households24,867  Unlock124,010,992
 Family Households  Unlock39,81580,755,759
     Married couple, w/children48.9%  Unlock30.5%
     Married couple, no children  Unlock43.9%42.9%
 Non Family Households5,755  Unlock43,255,233
     Single householder, w/children  Unlock8.4%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 Naperville    26 Reviews

Naperville has a lot to offer. The schools are top notch, it is close to Chicago with a commuter rail that is easily accessible and fast, there are lots of parks and  More

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Over 3 years ago

Lived around the area my whole life, moved to the downtown Naperville 7 years ago and wow has it changed and not for the better. There is way too much traffic and no  More

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Over 7 years ago

Went with my real estate agent to check out a few houses in Naperville.First impression was the town was adorable especially the downtown but way too many people.couldnt  More

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