Buffalo Grove, IL Demographics

A map of Buffalo Grove's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	24,954	26,762	58.2%	61.9%
Asian	12,755	11,865	29.7%	27.5%
Hispanic	2,478	2,854	5.8%	6.6%
Black	1,443	517	3.4%	1.2%
Multiracial	980	1,057	2.3%	2.4%
Native American/Other	281	157	0.7%	0.4%

Buffalo Grove, Illinois has an estimated population of 42,891, a less than 1% change from the 43,212 recorded in the 2020 Census. The population is 58.2% White, 29.7% Asian, 5.8% Hispanic, 3.4% Black, 2.3% Multiracial, and 0.7% Native American/Other. This demographic dot map shows the population of Buffalo Grove, with one dot drawn for each person counted by the Census, color-coded by race.

Buffalo Grove has become more racially diverse since the 2020 Census. It is less diverse than Illinois overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Buffalo Grove, that probability was 53.6% in 2020 and 56.8% in the most recent ACS estimates.

Buffalo Grove is ranked the 35th most populous place in Illinois, out of 1,461 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Buffalo Grove was ranked the 35th most populous place in the 2020 Census.

Buffalo Grove's White Population

24,954 residents of Buffalo Grove, or 58.2% of the population, identify as White. The share of White residents in Buffalo Grove is comparable to the share in Illinois overall, where 58.1% of the population is White. Buffalo Grove ranks 1296th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Buffalo Grove's White population has declined by an estimated 6.8%. White residents' share of Buffalo Grove's population has decreased from 61.9% to 58.2%.

Buffalo Grove is more White than neighboring Wheeling (49.1% White), Indian Creek (48.3% White), and Vernon Hills (57.9% White). Buffalo Grove is less White than neighboring Lincolnshire (69.3% White), and Long Grove (75.6% White).

Buffalo Grove's Black Population

1,443 residents of Buffalo Grove, or 3.4% of the population, identify as Black. The share of Black residents in Buffalo Grove is lower than in Illinois overall, where 13.3% of the population is Black. Buffalo Grove ranks 515th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Buffalo Grove's Black population has grown by an estimated 179.1%. Black residents' share of Buffalo Grove's population has increased from 1.2% to 3.4%.

Buffalo Grove is more Black than neighboring Lincolnshire (1.4% Black), Long Grove (3.1% Black), Indian Creek (2.1% Black), and Vernon Hills (1.9% Black). Buffalo Grove is less Black than neighboring Wheeling (3.8% Black).

Buffalo Grove's Asian Population

12,755 residents of Buffalo Grove, or 29.7% of the population, identify as Asian. The share of Asian residents in Buffalo Grove is significantly higher than in Illinois overall, where 5.9% of the population is Asian. Buffalo Grove ranks 6th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Buffalo Grove's Asian population has grown by an estimated 7.5%. Asian residents' share of Buffalo Grove's population has increased from 27.5% to 29.7%.

Buffalo Grove is more Asian than neighboring Lincolnshire (24% Asian), Wheeling (15.3% Asian), Long Grove (12.3% Asian), and Vernon Hills (24.6% Asian). Buffalo Grove is less Asian than neighboring Indian Creek (44.4% Asian).

Buffalo Grove's Hispanic Population

2,478 residents of Buffalo Grove, or 5.8% of the population, identify as Hispanic. The share of Hispanic residents in Buffalo Grove is considerably lower than in Illinois overall, where 18.8% of the population is Hispanic. Buffalo Grove ranks 403rd statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Buffalo Grove's Hispanic population has declined by an estimated 13.2%. Hispanic residents' share of Buffalo Grove's population has decreased from 6.6% to 5.8%.

Buffalo Grove is more Hispanic than neighboring Lincolnshire (1.6% Hispanic), Long Grove (4% Hispanic), and Indian Creek (1.1% Hispanic). Buffalo Grove is less Hispanic than neighboring Wheeling (28.1% Hispanic), and Vernon Hills (11.5% Hispanic).

Buffalo Grove's Native American/Other Population

281 residents of Buffalo Grove, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Buffalo Grove is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Buffalo Grove ranks 773rd statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Buffalo Grove's Native American/Other population has grown by an estimated 79.0%. Native American/Other residents' share of Buffalo Grove's population has remained roughly unchanged at 0.7%.

Buffalo Grove is more Native American/Other than neighboring Long Grove (0.1% Native American/Other), and Vernon Hills (0.4% Native American/Other). Buffalo Grove is less Native American/Other than neighboring Lincolnshire (1.1% Native American/Other), Wheeling (1.3% Native American/Other), and Indian Creek (3.4% Native American/Other).

Buffalo Grove's Multiracial Population

980 residents of Buffalo Grove, or 2.3% of the population, identify as Multiracial. The share of Multiracial residents in Buffalo Grove is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Buffalo Grove ranks 1134th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Buffalo Grove's Multiracial population has declined by an estimated 7.3%. Multiracial residents' share of Buffalo Grove's population has remained roughly unchanged at 2.3%.

Buffalo Grove is more Multiracial than neighboring Indian Creek (0.7% Multiracial). Buffalo Grove is less Multiracial than neighboring Lincolnshire (2.7% Multiracial), Long Grove (4.9% Multiracial), and Vernon Hills (3.7% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.