2026 Compare Cities People:
Oconee, IL vs Fillmore, IL

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Highlights
- Fillmore is 0% more densely populated than Oconee.
- People are 10.4% less likely to be married in Fillmore.
- The Median Age is 16.2 years older in Fillmore.
 Oconee, ILFillmore, ILUnited States
 Population  Unlock257329,725,481
 Female Population53.0%  Unlock50.5%
 Male Population47.0%  Unlock49.5%
 Median Age  Unlock53.138.4
 space3
 Population - 2010180  Unlock309,327,143
 Population - 2000  Unlock362285,036,114
 Population - 1990201  Unlock251,960,433
 Pop. 2000 to Now  Unlock-15.8%15.6%
 Pop. 1990 to Now-15.9%  Unlock30.8%
 space4
 Population Density  Unlock254.293.4
 Land Area0.4  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Oconee, ILFillmore, ILUnited States
 Age 0 to 48.3%  Unlock5.9%
 Age 5 to 9  Unlock1.6%6.1%
 Age 10 to 145.4%  Unlock6.6%
 Age 15 to 17  Unlock2.3%3.9%
 Age 18 to 201.2%  Unlock4.0%
 Age 21 to 24  Unlock4.7%5.2%
 Age 25 to 3417.3%  Unlock13.8%
 Age 35 to 44  Unlock8.6%12.9%
 Age 45 to 5411.3%  Unlock12.6%
 Age 55 to 59  Unlock9.7%6.7%
 Age 60 to 644.2%  Unlock6.3%
 Age 65 to 74  Unlock15.2%9.6%
 Age 75 to 842.4%  Unlock4.5%
 Age 85 and over  Unlock2.3%1.9%
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 Race
 Oconee, ILFillmore, ILUnited States
 White94.0%  Unlock59.4%
 Black  Unlock0.0%12.2%
 Asian0.0%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races4.2%  Unlock3.2%
 Hispanic  Unlock0.0%18.4%
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 Marriage & Family
 Oconee, ILFillmore, ILUnited States
 Married Population62.4%  Unlock49.8%
     Currently Married  Unlock55.9%48.0%
 Married but Separated1.5%  Unlock1.8%
 Single Population  Unlock44.1%50.2%
 Never Married15.0%  Unlock33.8%
 Divorced  Unlock13.6%10.8%
 Widowed4.5%  Unlock5.6%
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 Household Size  Unlock2.022.60
 Households71  Unlock124,010,992
 Family Households  Unlock6980,755,759
     Married couple, w/children36.2%  Unlock30.5%
     Married couple, no children  Unlock78.3%42.9%
 Non Family Households24  Unlock43,255,233
     Single householder, w/children  Unlock1.4%15.8%
     Single householder, no children6.4%  Unlock10.8%
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