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2025 Compare Cities People:
Rock Island, IL vs St. Johns, AZ

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Highlights
- St. Johns is 0% more densely populated than Rock Island.
- People are 20.8% more likely to be married in St. Johns.
- The Median Age is 8.5 years younger in St. Johns.
 Rock Island, ILSt. Johns, AZUnited States
 Population  Unlock3,416329,725,481
 Female Population50.0%  Unlock50.5%
 Male Population50.0%  Unlock49.5%
 Median Age  Unlock26.938.4
 space3
 Population - 201038,973  Unlock309,327,143
 Population - 2000  Unlock3,269285,036,114
 Population - 199040,552  Unlock251,960,433
 Pop. 2000 to Now  Unlock7.9%15.6%
 Pop. 1990 to Now-9.1%  Unlock30.8%
 space4
 Population Density  Unlock131.993.4
 Land Area16.9  Unlock3,531,905.4
 Water Area  Unlock0.2264,836.8
 space
 Est. Total Population By Age
 Rock Island, ILSt. Johns, AZUnited States
 Age 0 to 46.2%  Unlock5.9%
 Age 5 to 9  Unlock8.5%6.1%
 Age 10 to 146.9%  Unlock6.6%
 Age 15 to 17  Unlock5.4%3.9%
 Age 18 to 208.5%  Unlock4.0%
 Age 21 to 24  Unlock5.2%5.2%
 Age 25 to 3412.8%  Unlock13.8%
 Age 35 to 44  Unlock9.2%12.9%
 Age 45 to 549.9%  Unlock12.6%
 Age 55 to 59  Unlock0.8%6.7%
 Age 60 to 646.3%  Unlock6.3%
 Age 65 to 74  Unlock8.3%9.6%
 Age 75 to 844.5%  Unlock4.5%
 Age 85 and over  Unlock0.1%1.9%
 space1
 Race
 Rock Island, ILSt. Johns, AZUnited States
 White61.1%  Unlock59.4%
 Black  Unlock5.4%12.2%
 Asian4.5%  Unlock5.6%
 Native American  Unlock8.6%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races3.2%  Unlock3.2%
 Hispanic  Unlock39.5%18.4%
 space2
 Marriage & Family
 Rock Island, ILSt. Johns, AZUnited States
 Married Population39.4%  Unlock49.8%
     Currently Married  Unlock45.9%48.0%
 Married but Separated1.8%  Unlock1.8%
 Single Population  Unlock52.3%50.2%
 Never Married41.2%  Unlock33.8%
 Divorced  Unlock14.9%10.8%
 Widowed6.7%  Unlock5.6%
 space5
 Household Size  Unlock3.932.60
 Households15,285  Unlock124,010,992
 Family Households  Unlock64480,755,759
     Married couple, w/children27.4%  Unlock30.5%
     Married couple, no children  Unlock31.2%42.9%
 Non Family Households7,367  Unlock43,255,233
     Single householder, w/children  Unlock18.6%15.8%
     Single householder, no children10.8%  Unlock10.8%
Voting
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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Reviews for St. Johns    2 Reviews
John · St. Johns, AZ
Nice little town, just what I was looking for.
Over 7 years ago

I moved to St. Johns in Nov. 2017 and I love it, I bought a nice house at a very good price. No traffic, nice people, the prices are higher then Phoenix. House prices  More

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andrew · Saint Johns, AZ
just moved away from here
Over 9 years ago

I highly recommend nobody moving here. No jobs bad social status harassing police and very grouped. I just moved from there after four years of being there. Waisting  More

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Learn More About Rock Island, Illinois
Overview
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Learn More About St. Johns, Arizona
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