2026 Compare Cities People:
Castle Rock, CO vs Seminole, FL

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Highlights
- Seminole is 0% more densely populated than Castle Rock.
- People are 19.9% less likely to be married in Seminole.
- The Median Age is 17.5 years older in Seminole.
 Castle Rock, COSeminole, FLUnited States
 Population  Unlock19,224329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock53.238.4
 space3
 Population - 201048,793  Unlock309,327,143
 Population - 2000  Unlock10,890285,036,114
 Population - 19908,708  Unlock251,960,433
 Pop. 2000 to Now  Unlock73.2%15.6%
 Pop. 1990 to Now710.4%  Unlock30.8%
 space4
 Population Density  Unlock3,728.593.4
 Land Area34.3  Unlock3,531,905.4
 Water Area  Unlock0.5264,836.8
 space
 Est. Total Population By Age
 Castle Rock, COSeminole, FLUnited States
 Age 0 to 47.4%  Unlock5.9%
 Age 5 to 9  Unlock4.5%6.1%
 Age 10 to 147.2%  Unlock6.6%
 Age 15 to 17  Unlock1.9%3.9%
 Age 18 to 204.1%  Unlock4.0%
 Age 21 to 24  Unlock3.6%5.2%
 Age 25 to 3412.9%  Unlock13.8%
 Age 35 to 44  Unlock10.3%12.9%
 Age 45 to 5414.3%  Unlock12.6%
 Age 55 to 59  Unlock7.9%6.7%
 Age 60 to 644.7%  Unlock6.3%
 Age 65 to 74  Unlock15.3%9.6%
 Age 75 to 843.0%  Unlock4.5%
 Age 85 and over  Unlock4.8%1.9%
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 Race
 Castle Rock, COSeminole, FLUnited States
 White81.6%  Unlock59.4%
 Black  Unlock3.0%12.2%
 Asian2.0%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.2%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races3.8%  Unlock3.2%
 Hispanic  Unlock8.6%18.4%
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 Marriage & Family
 Castle Rock, COSeminole, FLUnited States
 Married Population62.5%  Unlock49.8%
     Currently Married  Unlock49.6%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock49.9%50.2%
 Never Married24.5%  Unlock33.8%
 Divorced  Unlock15.5%10.8%
 Widowed3.0%  Unlock5.6%
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 Household Size  Unlock2.122.60
 Households24,867  Unlock124,010,992
 Family Households  Unlock5,04480,755,759
     Married couple, w/children48.9%  Unlock30.5%
     Married couple, no children  Unlock59.7%42.9%
 Non Family Households5,755  Unlock43,255,233
     Single householder, w/children  Unlock11.3%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 8 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 12 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 Seminole    7 Reviews

I've lived in Seminole for almost 6 years now. It's a cute small little town that is part of the Tampa/St. Pete area. The Tampa Bay/St. Pete area is quite beautiful  More

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Over 15 years ago

Florida is a great  More

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I've only been in seminole for less than a week, and I've spent two days at the SPC library in Seminole. First day someone stole my day planner. The next day someone  More

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