2026 Compare Cities People:
Decatur, IL vs Buffalo, NY

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Highlights
- Buffalo is 0% more densely populated than Decatur.
- People are 24.6% less likely to be married in Buffalo.
- The Median Age is 6.0 years younger in Buffalo.
 Decatur, ILBuffalo, NYUnited States
 Population  Unlock276,011329,725,481
 Female Population52.7%  Unlock50.5%
 Male Population47.3%  Unlock49.5%
 Median Age  Unlock33.938.4
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 Population - 201076,095  Unlock309,327,143
 Population - 2000  Unlock292,648285,036,114
 Population - 199083,885  Unlock251,960,433
 Pop. 2000 to Now  Unlock-13.0%15.6%
 Pop. 1990 to Now-16.5%  Unlock30.8%
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 Population Density  Unlock6,835.793.4
 Land Area42.3  Unlock3,531,905.4
 Water Area  Unlock12.1264,836.8
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 Est. Total Population By Age
 Decatur, ILBuffalo, NYUnited States
 Age 0 to 46.0%  Unlock5.9%
 Age 5 to 9  Unlock6.4%6.1%
 Age 10 to 145.7%  Unlock6.6%
 Age 15 to 17  Unlock3.7%3.9%
 Age 18 to 204.7%  Unlock4.0%
 Age 21 to 24  Unlock6.5%5.2%
 Age 25 to 3413.2%  Unlock13.8%
 Age 35 to 44  Unlock12.0%12.9%
 Age 45 to 5410.8%  Unlock12.6%
 Age 55 to 59  Unlock6.2%6.7%
 Age 60 to 646.8%  Unlock6.3%
 Age 65 to 74  Unlock8.1%9.6%
 Age 75 to 845.7%  Unlock4.5%
 Age 85 and over  Unlock1.6%1.9%
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 Race
 Decatur, ILBuffalo, NYUnited States
 White67.5%  Unlock59.4%
 Black  Unlock32.3%12.2%
 Asian1.4%  Unlock5.6%
 Native American  Unlock0.3%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races4.9%  Unlock3.2%
 Hispanic  Unlock12.2%18.4%
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 Marriage & Family
 Decatur, ILBuffalo, NYUnited States
 Married Population42.5%  Unlock49.8%
     Currently Married  Unlock29.5%48.0%
 Married but Separated1.4%  Unlock1.8%
 Single Population  Unlock68.0%50.2%
 Never Married35.7%  Unlock33.8%
 Divorced  Unlock11.2%10.8%
 Widowed7.8%  Unlock5.6%
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 Household Size  Unlock2.262.60
 Households30,718  Unlock124,010,992
 Family Households  Unlock58,77580,755,759
     Married couple, w/children20.5%  Unlock30.5%
     Married couple, no children  Unlock28.6%42.9%
 Non Family Households14,383  Unlock43,255,233
     Single householder, w/children  Unlock30.5%15.8%
     Single householder, no children11.4%  Unlock10.8%
Reviews for Decatur    14 Reviews

I was sent here by the company I worked for in the '90's and was not initially impressed with midwest living. However, over the years I got used to living in the "Pride  More

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I grew up in Decatur and I still have family there, but it depresses me to see what it has become. It has a high unemployment rate, many business have closed or are run  More

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Over 15 years ago

If you enjoy drinking & driving, Decatur's fifteen drive-thru liquor windows, three times the # of drive-thru's than the ten largest cities in Illinois, COMBINED, will  More

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Reviews for Buffalo    94 Reviews

Over 4 years ago

Clean, fun, safe and unique. Great place to raise a family. Affordable housing, strong job market. Great schools and neighborhoods.  More

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Over 4 years ago

Buffalo was okay in 2016. Since then, crime is up, there are more methadone clinics than pediatricians, and so many of the small businesses that made this place charming  More

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Over 4 years ago

This city is just plain beautiful. Sure, it might not be New York or Albany. But it's Buffalo. Place is a God-send. You want to see the Falls and the Bills? Come here.  More

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