Buffalo Flag

Buffalo

County:
Sangamon County
County Seat:
No
Area (mi²):
33.686
State:
Illinois

Buffalo is located in Sangamon County, Illinois. Buffalo has a 2025 population of 2,602 . Buffalo is currently declining at a rate of -0.72% annually and its population has decreased by -2.55% since the most recent census, which recorded a population of 2,670 in 2020.

The average household income in Buffalo is $69,497 with a poverty rate of 19.89%. The median age in Buffalo is 33.5 years: 33.2 years for males, and 36.3 years for females. For every 100 females there are 95.7 males.

2.6K
Total Population
77
Density (mi²)
-19 -0.72%
Growth

Buffalo Population

Buffalo Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Buffalo includes 98.53% White, and smaller percentages for Native American, Asian, Two or more races and multiracial populations.

Population by Race

White (98.53%)

Native American (0.68%)

Asian (0.41%)

Two or more races (0.38%)

Race
Population
Percentage (of total)
White2,61798.53%
Native American180.68%
Asian110.41%
Two or more races100.38%

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 $39,872. Household income levels show a median of $54,875. The poverty rate stands at 19.89%.

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$92,870-
Families$70,809$79,436
Households$54,875$69,497
Non Families$32,255$47,104

$39,872

Average Income

$54,875

Median Household Income

19.89%

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)