2025 Compare Cities People:
Fort Collins, CO vs Rock Island, IL

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Highlights
- Rock Island is 0% more densely populated than Fort Collins.
- People are 5.2% less likely to be married in Rock Island.
- The Median Age is 5.4 years older in Rock Island.
 Fort Collins, CORock Island, ILUnited States
 Population  Unlock37,519329,725,481
 Female Population49.4%  Unlock50.5%
 Male Population50.6%  Unlock49.5%
 Median Age  Unlock35.438.4
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 Population - 2010145,123  Unlock309,327,143
 Population - 2000  Unlock39,684285,036,114
 Population - 199087,758  Unlock251,960,433
 Pop. 2000 to Now  Unlock-7.1%15.6%
 Pop. 1990 to Now91.7%  Unlock30.8%
 space4
 Population Density  Unlock2,226.093.4
 Land Area56.7  Unlock3,531,905.4
 Water Area  Unlock0.2264,836.8
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 Est. Total Population By Age
 Fort Collins, CORock Island, ILUnited States
 Age 0 to 44.1%  Unlock5.9%
 Age 5 to 9  Unlock5.3%6.1%
 Age 10 to 145.3%  Unlock6.6%
 Age 15 to 17  Unlock3.9%3.9%
 Age 18 to 209.5%  Unlock4.0%
 Age 21 to 24  Unlock5.9%5.2%
 Age 25 to 3418.2%  Unlock13.8%
 Age 35 to 44  Unlock11.4%12.9%
 Age 45 to 549.4%  Unlock12.6%
 Age 55 to 59  Unlock5.7%6.7%
 Age 60 to 644.8%  Unlock6.3%
 Age 65 to 74  Unlock10.0%9.6%
 Age 75 to 843.0%  Unlock4.5%
 Age 85 and over  Unlock2.5%1.9%
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 Race
 Fort Collins, CORock Island, ILUnited States
 White78.1%  Unlock59.4%
 Black  Unlock17.1%12.2%
 Asian3.2%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races3.7%  Unlock3.2%
 Hispanic  Unlock13.7%18.4%
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 Marriage & Family
 Fort Collins, CORock Island, ILUnited States
 Married Population41.6%  Unlock49.8%
     Currently Married  Unlock37.6%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock60.6%50.2%
 Never Married46.6%  Unlock33.8%
 Divorced  Unlock12.6%10.8%
 Widowed3.3%  Unlock5.6%
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 Household Size  Unlock2.262.60
 Households67,270  Unlock124,010,992
 Family Households  Unlock7,91880,755,759
     Married couple, w/children33.6%  Unlock30.5%
     Married couple, no children  Unlock39.9%42.9%
 Non Family Households32,201  Unlock43,255,233
     Single householder, w/children  Unlock21.8%15.8%
     Single householder, no children8.0%  Unlock10.8%
Reviews for Fort Collins    71 Reviews

Over 3 years ago

Moved my family here a few months ago and have been so disappointed. Housing is dismal - you get low quality and almost nothing for what you’re paying. The house we’re  More

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Over 4 years ago

There is a high cost of living in all of Colorado, and there is a train that runs through the town a honks its horn for about 5 min straight which is very annoying  More

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My family established our home in Larimer County in 1973; this area, Fort Collins, was a quaint, western-ish town we loved to visit. So I’ve visited FoCo multiple times  More

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Reviews for Rock Island    3 Reviews

Over 17 years ago

Pros: 1. Extremely low cost of living 2. Affordable place to live Cons: 1. High crime rate 2. Poor school system 3. Not much to  More

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Rock Island has a varied background and contains many cultural and historic areas. It has been improving its school system and is in a metropolitan area which contains  More

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Over 19 years ago

I just moved here for work one year ago. Moving from San Francisco here was a shock but ultimatelly good. The community is a typical midwestern small town. It is part  More

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