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2026 Compare Cities People:
Niagara, NY vs Sullivan, NY

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Highlights
- Sullivan is 0% more densely populated than Niagara.
- People are 13.3% more likely to be married in Sullivan.
- The Median Age is 1.4 years younger in Sullivan.
 Niagara, NYSullivan, NYUnited States
 Population  Unlock14,944329,725,481
 Female Population49.5%  Unlock50.5%
 Male Population50.5%  Unlock49.5%
 Median Age  Unlock43.938.4
 space3
 Population - 20108,533  Unlock309,327,143
 Population - 2000  Unlock14,991285,036,114
 Population - 19909,880  Unlock251,960,433
 Pop. 2000 to Now  Unlock0.6%15.6%
 Pop. 1990 to Now-19.0%  Unlock30.8%
 space4
 Population Density  Unlock204.393.4
 Land Area9.5  Unlock3,531,905.4
 Water Area  Unlock0.2264,836.8
 space
 Est. Total Population By Age
 Niagara, NYSullivan, NYUnited States
 Age 0 to 42.8%  Unlock5.9%
 Age 5 to 9  Unlock5.8%6.1%
 Age 10 to 144.2%  Unlock6.6%
 Age 15 to 17  Unlock3.7%3.9%
 Age 18 to 202.9%  Unlock4.0%
 Age 21 to 24  Unlock5.6%5.2%
 Age 25 to 3417.6%  Unlock13.8%
 Age 35 to 44  Unlock12.8%12.9%
 Age 45 to 5411.2%  Unlock12.6%
 Age 55 to 59  Unlock10.0%6.7%
 Age 60 to 647.9%  Unlock6.3%
 Age 65 to 74  Unlock11.0%9.6%
 Age 75 to 847.5%  Unlock4.5%
 Age 85 and over  Unlock1.6%1.9%
 space1
 Race
 Niagara, NYSullivan, NYUnited States
 White87.7%  Unlock59.4%
 Black  Unlock0.4%12.2%
 Asian0.6%  Unlock5.6%
 Native American  Unlock0.4%0.6%
 Hawaiian, Pacific Islander0.3%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races1.2%  Unlock3.2%
 Hispanic  Unlock2.3%18.4%
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 Marriage & Family
 Niagara, NYSullivan, NYUnited States
 Married Population49.5%  Unlock49.8%
     Currently Married  Unlock54.9%48.0%
 Married but Separated1.3%  Unlock1.8%
 Single Population  Unlock43.9%50.2%
 Never Married36.3%  Unlock33.8%
 Divorced  Unlock11.6%10.8%
 Widowed5.6%  Unlock5.6%
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 Household Size  Unlock2.752.60
 Households3,367  Unlock124,010,992
 Family Households  Unlock4,02280,755,759
     Married couple, w/children20.8%  Unlock30.5%
     Married couple, no children  Unlock53.7%42.9%
 Non Family Households1,113  Unlock43,255,233
     Single householder, w/children  Unlock12.4%15.8%
     Single householder, no children13.7%  Unlock10.8%
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Learn More About Niagara, New York
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Learn More About Sullivan, New York
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