Buffalo Flag

Buffalo

County:
Sangamon County
County Seat:
No
Area (mi²):
0.345
State:
Illinois

Buffalo is a village located in Sangamon County, Illinois. Buffalo has a 2025 population of 433 . Buffalo is currently declining at a rate of -0.69% annually and its population has decreased by -2.91% since the most recent census, which recorded a population of 446 in 2020.

The average household income in Buffalo is $81,370 with a poverty rate of 13.09%. The median age in Buffalo is 48.6 years: 48.8 years for males, and 46.2 years for females. For every 100 females there are 91.9 males.

433
Total Population
1,255
Density (mi²)
-3 -0.69%
Growth

Buffalo Population

Buffalo Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Buffalo includes 87.65% White, and smaller percentages for Asian and multiracial populations.

Population by Race

White (87.65%)

Two or more races (11.85%)

Asian (0.49%)

Race
Population
Percentage (of total)
White35587.65%
Two or more races4811.85%
Asian20.49%

Buffalo Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Buffalo's average per capita income is $53,125. Household income levels show a median of $67,321. The poverty rate stands at 13.09%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$100,278-
Families$97,813$103,514
Households$67,321$81,370
Non Families$17,500$39,698

$53,125

Average Income

$67,321

Median Household Income

13.09%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)