Buffalo, Illinois Population 2024

428

Buffalo is a city located in Sangamon County Illinois. Buffalo has a 2024 population of 428. Buffalo is currently declining at a rate of -1.15% annually and its population has decreased by -4.04% since the most recent census, which recorded a population of 446 in 2020.

The average household income in Buffalo is $81,245 with a poverty rate of 10.08%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Buffalo is 48.6 years, 48.4 years for males, and 50.4 years for females.

Buffalo Demographics

According to the most recent ACS, the racial composition of Buffalo was:

  • White: 89.42%
  • Two or more races: 8.31%
  • Asian: 2.27%
  • Black or African American:
  • Native American:
  • Native Hawaiian or Pacific Islander:
  • Other race:
Land Area (mi²)
0.4 sq mi
Density (mi²)
1,204.30/sq mi
Growth Since 2020
-4.04% (-18)
The current population of Buffalo, Illinois is 428 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 446.

Buffalo, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White35589.42%
Two or more races338.31%
Asian92.27%
Black or African American
Native American
Native Hawaiian or Pacific Islander
Other race
showing: 7 rows

White

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Buffalo Population by Race

Buffalo Population Pyramid 2024

Buffalo Median Age

48.6

Total

48.4

Male

50.4

Female

Buffalo Adults

There are 312 adults, (99 of whom are seniors) in Buffalo.

Buffalo Age Dependency

86.4

Age Dependency Ratio

46.5

Old Age Dependency Ratio

39.9

Child Dependency Ratio

Buffalo Sex Ratio

Female20250.88%
Male19549.12%

Buffalo Population by Age

Buffalo Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All1662.3963.936.1
Married8638614
Non Family561.0933.966.1
Female213.3347.652.4
Male32.671000
showing: 5 rows

2.94

Average Family Size

2.39

Average Household Size

63.9%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Buffalo Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Buffalo Educational Attainment by Sex (over 25)

Buffalo Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among asian people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 100%.

Buffalo Educational Attainment by Race

All

Male

Female

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$50,500

Average Earnings

$79,167

Average Male

$31,818

Average Female

Buffalo Earnings by Educational Attainment

Buffalo Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Buffalo Language

95.42% of Buffalo residents speak only English, while 4.58% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 2.29% of the population.

Buffalo Language

Buffalo Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White3554011.27%
showing: 1 rows

10.08%

Overall Poverty Rate

8.72%

Male Poverty Rate

11.39%

Female Poverty Rate

Poverty in Buffalo

The race most likely to be in poverty in Buffalo is White, with 11.27% below the poverty level.

The race least likely to be in poverty in Buffalo is White, with 11.27% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was . Among those working part-time, it was 6.38%, and for those that did not work, the poverty rate was 22.73%.

Buffalo Poverty

rate

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Rate
Poverty
Less Than 9th Grade35.29%
High School17.05%
Some College6.59%
Bachelors or Greater
showing: 4 rows

Buffalo Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed100%
Male Employed0.97%
Female Employed
Female Unemployed
showing: 4 rows

Buffalo Poverty Rate by Employment Status and Sex

Buffalo Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Buffalo Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

57.5%

Overall Marriage Rate

63.5%

Male Marriage Rate

51.7%

Female Marriage Rate

Buffalo Married by Age and Sex

male

female

Buffalo Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Buffalo Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Buffalo Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

31

Number of Veterans

24

Male Veterans

7

Female Veterans

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Buffalo Veterans by War

count

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Buffalo Veterans by Age

count

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Buffalo Veterans by Race

Buffalo Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.23%

Veteran Poverty Rate

38.71%

Veteran Disability Rate

Buffalo Veterans by Education

LaborForceParticipation

58.2%

Labor Force Participation

57.9%

Employment Rate

0.5%

Unemployment Rate

Buffalo Employment by Age

LaborForceParticipation

Buffalo Employment by Race

LaborForceParticipation

Buffalo Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

70.03%

Born in Buffalo

89.92%

Native Born

10.08%

Foreign Born

8.06%

Non Citizen

2.02%

Naturalized

Place of Birth

89.92% of Buffalo residents were born in the United States, with 70.03% having been born in Illinois. 8.06% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Buffalo Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029403-5-1.23%
2028408-5-1.21%
2027413-5-1.2%
2026418-5-1.18%
2025423-5-1.17%
2024428-5-1.15%
2023433-5-1.14%
2022438-5-1.13%
2021443-3-0.67%
2020446-30-6.3%
2019476-5-1.04%
2018481-4-0.82%
2017485-4-0.82%
2016489-4-0.81%
2015493-2-0.4%
2014495-4-0.8%
2013499-2-0.4%
2012501
201150120.4%
2010499
showing: 20 rows

Buffalo Population by Year