Buffalo township Flag

Buffalo township

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

Buffalo township is located in Sangamon County, Illinois. Buffalo township has a 2026 population of 2,583. Buffalo township is currently declining at a rate of -0.73% annually and its population has decreased by -3.26% since the most recent census, which recorded a population of 2,670 in 2020.

The median household income in Buffalo township is $63,080 with a poverty rate of 19.29%. The median age in Buffalo township is 34.4 years: 33.5 years for males, and 37.7 years for females. For every 100 females there are 91.5 males.

2.6K
Total Population
77
Density (mi²)
-19 -0.73%
Growth

Buffalo township Population

Buffalo township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20262,583-19-0.73%
20252,602-19-0.72%
20242,621-19-0.72%
20232,640-6-0.23%
20222,646-7-0.26%
20212,653-17-0.64%
20202,670-7-0.26%
20192,612-16-0.61%
20182,628-20-0.76%
20172,648-13-0.49%
20162,661-28-1.04%
20152,689-23-0.85%
20142,712-21-0.77%
20132,733-27-0.98%
20122,760-17-0.61%
20112,777-36-1.28%
20102,806-7-0.25%

Median Age

Overall: 34.4 years
Female: 37.7 years
Male: 33.5 years

Buffalo township Adults

There are 2,043 adults, (571 of whom are seniors) in Buffalo township.

Sex Ratio

Female: 1,383 (52.2%)
Male: 1,265 (47.8%)

Demographics

The racial composition of Buffalo township includes 96.68% White, and smaller percentages for Two or more races, Native American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2,56096.68%
Two or more races602.27%
Native American170.64%
Asian110.42%
Race
Population ↓
Percentage (of total)
White271.02%
Native American170.64%
Race
Population ↓
Percentage (of total)
White2,53395.66%
Two or more races602.27%
Asian110.42%

Buffalo township Marital Status

Economics and Income Statistics

Buffalo township 's average per capita income is $41,505. Household income levels show a median of $63,080. The poverty rate stands at 19.29%.

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$89,811-
Families$80,426$84,318
Households$63,080$72,650
Non Families$33,500$46,854

$41,505

Average Income

$63,080

Median Household Income

19.29%

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)