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2026 Compare Cities People:
Arthur, IL vs Sullivan, IL

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Highlights
- Sullivan is 0% more densely populated than Arthur.
- People are 10.3% less likely to be married in Sullivan.
- The Median Age is 8.9 years younger in Sullivan.
 Arthur, ILSullivan, ILUnited States
 Population  Unlock4,532329,725,481
 Female Population55.8%  Unlock50.5%
 Male Population44.2%  Unlock49.5%
 Median Age  Unlock38.438.4
 space3
 Population - 20102,286  Unlock309,327,143
 Population - 2000  Unlock4,326285,036,114
 Population - 19902,112  Unlock251,960,433
 Pop. 2000 to Now  Unlock1.7%15.6%
 Pop. 1990 to Now3.8%  Unlock30.8%
 space4
 Population Density  Unlock1,667.493.4
 Land Area1.3  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Arthur, ILSullivan, ILUnited States
 Age 0 to 47.2%  Unlock5.9%
 Age 5 to 9  Unlock6.4%6.1%
 Age 10 to 144.3%  Unlock6.6%
 Age 15 to 17  Unlock4.3%3.9%
 Age 18 to 202.0%  Unlock4.0%
 Age 21 to 24  Unlock3.2%5.2%
 Age 25 to 3412.5%  Unlock13.8%
 Age 35 to 44  Unlock12.8%12.9%
 Age 45 to 5411.2%  Unlock12.6%
 Age 55 to 59  Unlock7.0%6.7%
 Age 60 to 644.0%  Unlock6.3%
 Age 65 to 74  Unlock9.9%9.6%
 Age 75 to 8412.1%  Unlock4.5%
 Age 85 and over  Unlock2.4%1.9%
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 Race
 Arthur, ILSullivan, ILUnited States
 White95.7%  Unlock59.4%
 Black  Unlock2.0%12.2%
 Asian0.2%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races1.4%  Unlock3.2%
 Hispanic  Unlock1.4%18.4%
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 Marriage & Family
 Arthur, ILSullivan, ILUnited States
 Married Population58.4%  Unlock49.8%
     Currently Married  Unlock50.0%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock47.6%50.2%
 Never Married18.2%  Unlock33.8%
 Divorced  Unlock14.8%10.8%
 Widowed13.5%  Unlock5.6%
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 Household Size  Unlock2.462.60
 Households940  Unlock124,010,992
 Family Households  Unlock1,19680,755,759
     Married couple, w/children35.0%  Unlock30.5%
     Married couple, no children  Unlock48.1%42.9%
 Non Family Households406  Unlock43,255,233
     Single householder, w/children  Unlock23.2%15.8%
     Single householder, no children2.2%  Unlock10.8%
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Learn More About Arthur, Illinois
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Learn More About Sullivan, Illinois
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