State
County
Land Area
9.5 sq mi
Density
4,239.4/sq mi
2020 Growth Rate
-0.69%
Growth Since 2010
-3.09%
Rank in State
Rank in Country
Buffalo Grove is a city located in Illinois. With a 2020 population of 40,213, it is the 40th largest city in Illinois and the 970th largest city in the United States. Buffalo Grove is currently declining at a rate of -0.69% annually and its population has decreased by -3.09% since the most recent census, which recorded a population of 41,496 in 2010. Buffalo Grove reached it's highest population of 42,909 in 2000. Spanning over 10 miles, Buffalo Grove has a population density of 4,239 people per square mile.
The average household income in Buffalo Grove is $140,449 with a poverty rate of 3.36%. The median rental costs in recent years comes to $1,643 per month, and the median house value is $332,300. The median age in Buffalo Grove is 41.7 years, 40.8 years for males, and 42.4 years for females. For every 100 females there are 94.0 males.
According to the most recent ACS, the racial composition of Buffalo Grove was:
| Race | Population | Percentage |
|---|---|---|
| White | 29,640 | 72.18% |
| Asian | 8,643 | 21.05% |
| Two or More Races | 1,155 | 2.81% |
| Some Other Race | 850 | 2.07% |
| Black or African American | 664 | 1.62% |
| American Indian and Alaska Native | 87 | 0.21% |
| Native Hawaiian and Other Pacific Islander | 23 | 0.06% |
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 15,399 | 2.66 | 79.8 |
| Married | 10,154 | 3.21 | 84.4 |
| Non Family | 3,918 | 1.11 | 71.7 |
| Female | 938 | 3.08 | 69.2 |
| Male | 389 | 2.82 | 68.4 |
3.15
Average Family Size
2.66
Average Household Size
| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 320 | 1.10% |
| 9th to 12th Grade | 362 | 1.24% |
| High School Graduate | 3,220 | 11.07% |
| Some College | 4,124 | 14.17% |
| Associates Degree | 1,838 | 6.32% |
| Bachelors Degree | 11,088 | 38.11% |
| Graduate Degree | 8,145 | 27.99% |
| Name | Total | High School | Bachelors |
|---|---|---|---|
| White | 20,787 | 20,482 | 13,182 |
| Asian | 5,873 | 5,727 | 5,000 |
| Hispanic | 1,630 | 1,401 | 556 |
| Other Race | 616 | 531 | 179 |
| Black | 433 | 431 | 252 |
| Multiple Races | 387 | 387 | 210 |
| Native American | 38 | 29 | 8 |
| Islander | 23 | 23 | 23 |
The highest rate of high school graduation is among islander people with a rate of 100.00%.
The highest rate of bachelors degrees is among islander people with a rate of 100.00%.
$64,817
Average Earnings
$82,236
Average Male
$53,168
Average Female
58.39% of Buffalo Grove residents speak only English, while 41.61% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 20.42% of the population.
| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 27,764 | 1,066 | 3.84% |
| Asian | 8,643 | 182 | 2.11% |
| Hispanic | 2,780 | 87 | 3.13% |
| Multiple | 1,155 | 29 | 2.51% |
| Other | 850 | 13 | 1.53% |
| Black | 655 | 11 | 1.68% |
3.36%
Overall Poverty Rate
3.28%
Male Poverty Rate
3.43%
Female Poverty Rate
The race most likely to be in poverty in Buffalo Grove is White, with 3.84% below the poverty level.
The race least likely to be in poverty in Buffalo Grove is Other, with 1.53% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.08%. Among those working part-time, it was 3.04%, and for those that did not work, the poverty rate was 10.02%.
64.4%
Overall Marriage Rate
67.1%
Male Marriage Rate
61.8%
Female Marriage Rate
The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 35-44.
| Name | Veterans | % of Total |
|---|---|---|
| White | 961 | 4.05% |
| 2 or More | 46 | 10.43% |
| Hispanic | 37 | 2.07% |
| Asian | 34 | 0.55% |
| Black | 18 | 3.44% |
| Other | 12 | 1.81% |
3.67%
Veteran Poverty Rate
27.15%
Veteran Disability Rate
72.5%
Labor Force Participation
69.9%
Employment Rate
3.5%
Unemployment Rate
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
67.13%
Native Born
32.87%
Foreign Born
14.68%
Non Citizen
18.19%
Naturalized
67.13% of Buffalo Grove residents were born in the United States, with 52.64% having been born in Illinois. 14.68% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
| Year | Population | Growth | Annual Growth Rate |
|---|---|---|---|
| 2020 | 40,213 | -281 | -0.69% |
| 2019 | 40,494 | -281 | -0.69% |
| 2018 | 40,775 | -372 | -0.90% |
| 2017 | 41,147 | -234 | -0.57% |
| 2016 | 41,381 | -118 | -0.28% |
| 2015 | 41,499 | -201 | -0.48% |
| 2014 | 41,700 | -45 | -0.11% |
| 2013 | 41,745 | 83 | 0.20% |
| 2012 | 41,662 | 7 | 0.02% |
| 2011 | 41,655 | 119 | 0.29% |
| 2010 | 41,536 | -1,373 | -0.32% |
| 2000 | 42,909 | 6,482 | 1.65% |
| 1990 | 36,427 | 14,197 | 5.06% |
| 1980 | 22,230 | 9,897 | 6.07% |
| 1970 | 12,333 | 10,833 | 23.45% |
| 1960 | 1,500 | 0.00% |