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2025 Compare Cities People:
DeKalb, IL vs Rock Island, IL

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Highlights
- Rock Island is 0% more densely populated than DeKalb.
- People are 28.0% more likely to be married in Rock Island.
- The Median Age is 10.3 years older in Rock Island.
 DeKalb, ILRock Island, ILUnited States
 Population  Unlock37,519329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock35.438.4
 space3
 Population - 201044,107  Unlock309,327,143
 Population - 2000  Unlock39,684285,036,114
 Population - 199034,925  Unlock251,960,433
 Pop. 2000 to Now  Unlock-7.1%15.6%
 Pop. 1990 to Now22.0%  Unlock30.8%
 space4
 Population Density  Unlock2,226.093.4
 Land Area16.1  Unlock3,531,905.4
 Water Area  Unlock0.2264,836.8
 space
 Est. Total Population By Age
 DeKalb, ILRock Island, ILUnited States
 Age 0 to 45.1%  Unlock5.9%
 Age 5 to 9  Unlock5.3%6.1%
 Age 10 to 145.6%  Unlock6.6%
 Age 15 to 17  Unlock3.9%3.9%
 Age 18 to 2013.0%  Unlock4.0%
 Age 21 to 24  Unlock5.9%5.2%
 Age 25 to 3414.5%  Unlock13.8%
 Age 35 to 44  Unlock11.4%12.9%
 Age 45 to 548.2%  Unlock12.6%
 Age 55 to 59  Unlock5.7%6.7%
 Age 60 to 643.5%  Unlock6.3%
 Age 65 to 74  Unlock10.0%9.6%
 Age 75 to 842.4%  Unlock4.5%
 Age 85 and over  Unlock2.5%1.9%
 space1
 Race
 DeKalb, ILRock Island, ILUnited States
 White60.5%  Unlock59.4%
 Black  Unlock17.1%12.2%
 Asian4.0%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races4.6%  Unlock3.2%
 Hispanic  Unlock13.7%18.4%
 space2
 Marriage & Family
 DeKalb, ILRock Island, ILUnited States
 Married Population30.8%  Unlock49.8%
     Currently Married  Unlock37.6%48.0%
 Married but Separated0.8%  Unlock1.8%
 Single Population  Unlock60.6%50.2%
 Never Married58.0%  Unlock33.8%
 Divorced  Unlock12.6%10.8%
 Widowed4.0%  Unlock5.6%
 space5
 Household Size  Unlock2.262.60
 Households15,867  Unlock124,010,992
 Family Households  Unlock7,91880,755,759
     Married couple, w/children26.7%  Unlock30.5%
     Married couple, no children  Unlock39.9%42.9%
 Non Family Households8,041  Unlock43,255,233
     Single householder, w/children  Unlock21.8%15.8%
     Single householder, no children12.3%  Unlock10.8%
Voting
Reviews for Dekalb    2 Reviews
Bonnie · DeKalb, IL
Not as good as it seems
Over 17 years ago

While I love the cheaper rents then in the closer suburbs (to Chicago), the lack of high paying jobs for anyone without high degrees (Masters or higher) is  More

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Steve · DeKalb, IL
DeKalb: A semi-rural college community
Over 18 years ago

As a 37 year resident of DeKalb - an escapee of the Chicago suburbs, I am pleased to write a bit about my hometown. Originally a college town in a farming community,  More

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Reviews for Rock Island    3 Reviews
Clint · Barry, IL
Rock Island - Pros/Cons
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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Gene · Taylor Ridge, IL
QCA Education and Business
Over 18 years ago

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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Martha · Rock Island, IL
Affordable Small City
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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Learn More About DeKalb, Illinois
Overview
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Learn More About Rock Island, Illinois
Overview
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