CITY · 1990 CENSUS

Buffalo

Illinois · 521 residents · 0.345 sq mi

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The short version

Buffalo has roughly average household income, with a median household income of $29,271. Population has held roughly steady since 2000. Median home value is $47,300.

At a glance

Average income

near the US median

US median: $30,130

Mid-age

median age 31.5

US median: 33.0

Less educated

14% hold a bachelor's degree

US average: 20%

More affordable

home values down 8%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

521

+6%vs 2000

vs 491 in 2000

1990 – 2025

Median age

31.5

−13%vs 2000

vs 36.4 in 2000

US average: 33.0

Population, 1990 – 2024

2024482

Age distribution, 1990

Under 55%(26)

US avg: 7.3%

5 to 910.2%(53)

US avg: 7.3%

10 to 1411.1%(58)

US avg: 6.9%

15 to 1910.4%(54)

US avg: 7.1%

20 to 244.4%(23)

US avg: 7.5%

25 to 3416.1%(84)

US avg: 17.5%

35 to 4415.5%(81)

US avg: 15.1%

45 to 5410%(52)

US avg: 10.2%

55 to 645.2%(27)

US avg: 8.5%

65 to 746.1%(32)

US avg: 7.3%

75 to 844.2%(22)

US avg: 4%

85 and over1.7%(9)

US avg: 1.2%

BAR + DOT: THIS PLACE · TICK: US AVERAGE

Section 02

Income & economy

Median household income

$29,271

+6%inflation adjusted, since 2000

vs $36,250 in 2000

US average: $30,130

1990 – 2024

Per capita income

$11,452

−42%vs 2000

vs $19,637 in 2000

US average: $14,340

Poverty rate

9.8%

−1.0 ptsvs 2000

vs 10.8% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$47,300

−8%inflation adjusted, since 2000

vs $67,500 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$319

+60%inflation adjusted, since 2000

vs $263 in 2000

US average: $450

Owner-occupied

66.0%

−8.4 ptsvs 2000

vs 74.4% in 2000

34.0% rent

RELATED:See current rent listings in Buffalo on RentDataNow

Section 04

Race & ethnicity

2000

White, non-Hispanic96.3%(473)

Black0%(0)

Hispanic / Latino1.2%(6)

Asian0.2%(1)

Other0%

1990

White, non-Hispanic97.7%(509)

Black2.3%(12)

Hispanic / Latino0%(0)

Asian0%(0)

Other0%(0)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin

Mexican1.5%(7)

Asian origin

Filipino0.2%(1)

Ancestry

English18.3%(88)

German15.4%(74)

Irish12.2%(59)

American10.4%(50)

Norwegian5.6%(27)

Italian4.6%(22)

French2.7%(13)

British1.9%(9)

Polish1.7%(8)

Scottish1.2%(6)

Finnish0.6%(3)

Swiss0.4%(2)

+ 2 more ancestry groups with data

Welsh0.4%(2)

Czech0.2%(1)

RANKED:Largest English population · Largest German population · Largest Irish population · Largest American population · Largest Norwegian population

Section 05

Education

Bachelor's degree or higher

14.3%

+2.1 ptsvs 2000

vs 12.2% in 2000

US average: 20.3%

High school or higher

78.8%

−7.1 ptsvs 2000

vs 85.9% in 2000

US average: 75.2%

Graduate degree

5.9%

+0.9 ptsvs 2000

vs 5.0% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

24.5 min

+43%vs 2000

vs 17.1 min in 2000

US average: 21.9

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)

Men 15+

Never married26.3%(50)

Married61.1%(116)

Widowed4.2%(8)

Divorced8.4%(16)

Women 15+

Never married27.5%(58)

Married46%(97)

Widowed8.1%(17)

Divorced18.5%(39)

SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024

Drill deeper

Places similar to Buffalo

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BUFFALO VS

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BUFFALO VS

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BUFFALO VS

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BUFFALO VS

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Frequently asked

How many people live in Buffalo, Illinois?

Buffalo, Illinois has about 521 residents according to the 1990 Census.

What is the median household income in Buffalo, Illinois?

The typical household in Buffalo, Illinois earns about $29,271 a year. Half of households make more than that, and half make less.

Is Buffalo, Illinois expensive?

In Buffalo, Illinois, the median home is worth about $47,300, and the typical rent is about $319 a month.

How educated are people in Buffalo, Illinois?

About 14.3% of adults age 25 and over in Buffalo, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Buffalo, Illinois?

About 9.8% of people in Buffalo, Illinois live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →