Buffalo Grove, Illinois Population 2024

42,071

Buffalo Grove is a city located in Cook County and Lake County Illinois. Buffalo Grove has a 2024 population of 42,071. Buffalo Grove is currently declining at a rate of -0.59% annually and its population has decreased by -2.37% since the most recent census, which recorded a population of 43,092 in 2020.

The average household income in Buffalo Grove is $157,159 with a poverty rate of 6.18%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Buffalo Grove is 41.6 years, 41.3 years for males, and 41.7 years for females.

Buffalo Grove Demographics

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

  • White: 64.89%
  • Asian: 25.4%
  • Black or African American: 3.58%
  • Two or more races: 3.29%
  • Other race: 1.77%
  • Native American: 0.87%
  • Native Hawaiian or Pacific Islander: 0.2%
Land Area (mi²)
9.5 sq mi
Density (mi²)
4,435.30/sq mi
Growth Since 2020
-2.37% (-1,021)
The current population of Buffalo Grove, Illinois is 42,071 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 43,092.

Buffalo Grove, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White27,85964.89%
Asian10,90625.4%
Black or African American1,5363.58%
Two or more races1,4123.29%
Other race7621.77%
Native American3720.87%
Native Hawaiian or Pacific Islander870.2%
showing: 7 rows

White

Asian

Black or African American

Two or more races

Other race

Native American

Native Hawaiian or Pacific Islander

Buffalo Grove Population by Race

Buffalo Grove Population Pyramid 2024

Buffalo Grove Median Age

41.6

Total

41.3

Male

41.7

Female

Buffalo Grove Adults

There are 32,432 adults, (6,259 of whom are seniors) in Buffalo Grove.

Buffalo Grove Age Dependency

64

Age Dependency Ratio

23.9

Old Age Dependency Ratio

40.1

Child Dependency Ratio

Buffalo Grove Sex Ratio

Female22,32351.99%
Male20,61148.01%

Buffalo Grove Population by Age

Buffalo Grove Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All15,7642.7183.216.8
Married10,2923.2289.110.9
Non Family3,8531.0976.723.3
Female1,1433.4852.947.1
Male4763.038317
showing: 5 rows

3.2

Average Family Size

2.71

Average Household Size

83.2%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Buffalo Grove 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 Grove Educational Attainment by Sex (over 25)

Buffalo Grove Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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

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

Buffalo Grove Educational Attainment by Race

All

Male

Female

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$74,656

Average Earnings

$94,164

Average Male

$56,538

Average Female

Buffalo Grove Earnings by Educational Attainment

Buffalo Grove Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Buffalo Grove Language

55.3% of Buffalo Grove residents speak only English, while 44.7% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 23.75% of the population.

Buffalo Grove Language

Buffalo Grove Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White26,2381,0824.12%
Black1,50286257.39%
Asian10,9005434.98%
Hispanic2,9191093.73%
Multiple1,412624.39%
Other762597.74%
showing: 6 rows

6.18%

Overall Poverty Rate

5.3%

Male Poverty Rate

7%

Female Poverty Rate

Poverty in Buffalo Grove

The race most likely to be in poverty in Buffalo Grove is Black, with 57.39% below the poverty level.

The race least likely to be in poverty in Buffalo Grove is Hispanic, with 3.73% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.76%. Among those working part-time, it was 3.64%, and for those that did not work, the poverty rate was 13.77%.

Buffalo Grove Poverty

rate

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Rate
Poverty
High School9.12%
Less Than 9th Grade5.4%
Bachelors or Greater4.54%
Some College4.17%
showing: 4 rows

Buffalo Grove Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed19.82%
Male Unemployed6.27%
Male Employed2.1%
Female Employed1.87%
showing: 4 rows

Buffalo Grove Poverty Rate by Employment Status and Sex

Buffalo Grove Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Buffalo Grove Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

63.3%

Overall Marriage Rate

66.9%

Male Marriage Rate

59.9%

Female Marriage Rate

Buffalo Grove Married by Age and Sex

male

female

Buffalo Grove 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 45-54.

Buffalo Grove Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Buffalo Grove Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

950

Number of Veterans

806

Male Veterans

144

Female Veterans

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Buffalo Grove Veterans by War

count

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Buffalo Grove Veterans by Age

count

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Buffalo Grove Veterans by Race

Buffalo Grove Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

1.63%

Veteran Poverty Rate

20.93%

Veteran Disability Rate

Buffalo Grove Veterans by Education

LaborForceParticipation

69.5%

Labor Force Participation

67.1%

Employment Rate

3.3%

Unemployment Rate

Buffalo Grove Employment by Age

LaborForceParticipation

Buffalo Grove Employment by Race

LaborForceParticipation

Buffalo Grove 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

49.6%

Born in Buffalo Grove

64.19%

Native Born

35.81%

Foreign Born

15.07%

Non Citizen

20.73%

Naturalized

Place of Birth

64.19% of Buffalo Grove residents were born in the United States, with 49.6% having been born in Illinois. 15.07% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Buffalo Grove Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202940,826-249-0.61%
202841,075-249-0.6%
202741,324-249-0.6%
202641,573-249-0.6%
202541,822-249-0.59%
202442,071-249-0.59%
202342,320-249-0.58%
202242,569-249-0.58%
202142,818-274-0.64%
202043,0922,5896.39%
201940,503-303-0.74%
201840,806-356-0.86%
201741,162-231-0.56%
201641,393-115-0.28%
201541,508-199-0.48%
201441,707-45-0.11%
201341,752840.2%
201241,66880.02%
201141,6601170.28%
201041,543-1,366-3.18%
200042,9096,48217.79%
199036,42714,19763.86%
198022,2309,89780.25%
197012,33310,833722.2%
19601,500
showing: 25 rows

Buffalo Grove Population by Year