Buffalo Grove Flag

Buffalo Grove

County:
Lake County
County Seat:
No
Area (mi²):
9.559
State:
Illinois

Buffalo Grove is a village located in Lake County, Illinois. Buffalo Grove has a 2026 population of 42,768. Buffalo Grove is currently declining at a rate of -0.1% annually and its population has decreased by -0.73% since the most recent census, which recorded a population of 43,083 in 2020.

The median household income in Buffalo Grove is $129,395 with a poverty rate of 7.21%. The median age in Buffalo Grove is 42 years: 41.8 years for males, and 42.3 years for females. For every 100 females there are 92.3 males.

42.8K
Total Population
4,474
Density (mi²)
-44 -0.1%
Growth

Buffalo Grove Population

Buffalo Grove Population

Year ↓
Population
Growth
Annual Change
202642,768-44-0.1%
202542,812-95-0.22%
202442,9071570.37%
202342,750890.21%
202242,661-165-0.39%
202142,826-369-0.85%
202043,0832,5806.37%
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%
201041,543470.11%
200042,9096,48217.79%
199036,42714,19763.86%
198022,2309,89780.25%
197012,33310,833722.2%
19601,50000%

Median Age

Overall: 42 years
Female: 42.3 years
Male: 41.8 years

Buffalo Grove Adults

There are 32,374 adults, (6,774 of whom are seniors) in Buffalo Grove.

Sex Ratio

Female: 22,299 (52%)
Male: 20,592 (48%)

Demographics

The racial composition of Buffalo Grove includes 59.24% White, 29.77% Asian, 3.39% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White25,40859.24%
Asian12,76729.77%
Two or more races1,9154.46%
Black or African American1,4523.39%
Other race1,0842.53%
Native American2330.54%
Native Hawaiian or Pacific Islander320.07%
Race
Population ↓
Percentage (of total)
Two or more races9352.18%
Other race8531.99%
White4541.06%
Native American2150.5%
Asian120.03%
Black or African American90.02%
Race
Population ↓
Percentage (of total)
White24,95458.18%
Asian12,75529.74%
Black or African American1,4433.36%
Two or more races9802.28%
Other race2310.54%
Native Hawaiian or Pacific Islander320.07%
Native American180.04%

Buffalo Grove Marital Status

Economics and Income Statistics

Buffalo Grove's average per capita income is $84,680. Household income levels show a median of $129,395. The poverty rate stands at 7.21%.

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$170,246-
Families$153,583$193,457
Households$129,395$164,157
Non Families$61,214$78,593

$84,680

Average Income

$129,395

Median Household Income

7.21%

Poverty Rate

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)