Lake County Demographics

A map of Lake County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	401,332	408,349	56.2%	57.2%
Hispanic	177,631	171,962	24.9%	24.1%
Asian	61,505	58,901	8.6%	8.2%
Black	45,196	47,240	6.3%	6.6%
Multiracial	23,810	23,405	3.3%	3.3%
Native American/Other	4,749	4,485	0.7%	0.6%

Lake County, Illinois has an estimated population of 714,223, a less than 1% change from the 714,342 recorded in the 2020 Census. The population is 56.2% White, 24.9% Hispanic, 8.6% Asian, 6.3% Black, 3.3% Multiracial, and 0.7% Native American/Other. This demographic dot map shows the population of Lake County, with one dot drawn for each person counted by the Census, color-coded by race.

Lake has become slightly more racially diverse since the 2020 Census. It is about as diverse as Illinois overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Lake County, that probability was 60.3% in 2020 and 61.0% in the most recent ACS estimates.

Lake County is ranked the 3rd most populous county in Illinois, out of 102 counties. Lake County was ranked the 3rd most populous county in the 2020 Census.

Lake County's White Population

401,332 residents of Lake County, or 56.2% of the population, identify as White. The share of White residents in Lake County is comparable to the share in Illinois overall, where 58.1% of the population is White. Lake County ranks 100th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Lake County's White population has declined by an estimated 1.7%. White residents' share of Lake County's population has decreased from 57.2% to 56.2%.

Lake County is more White than neighboring Cook County (40.1% White), and Milwaukee County (48.1% White). Lake County is less White than neighboring Kenosha County (71.5% White), Racine County (68.6% White), and DuPage County (62.2% White).

Lake County's Black Population

45,196 residents of Lake County, or 6.3% of the population, identify as Black. The share of Black residents in Lake County is lower than in Illinois overall, where 13.3% of the population is Black. Lake County ranks 27th statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Lake County's Black population has declined by an estimated 4.3%. Black residents' share of Lake County's population has remained roughly unchanged at 6.3%.

Lake County is more Black than neighboring Kenosha County (5.9% Black), and DuPage County (4.8% Black). Lake County is less Black than neighboring Cook County (21.8% Black), Racine County (10.3% Black), and Milwaukee County (25.4% Black).

Lake County's Asian Population

61,505 residents of Lake County, or 8.6% of the population, identify as Asian. The share of Asian residents in Lake County is slightly higher than in Illinois overall, where 5.9% of the population is Asian. Lake County ranks 3rd statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Lake County's Asian population has grown by an estimated 4.4%. Asian residents' share of Lake County's population has remained roughly unchanged at 8.6%.

Lake County is more Asian than neighboring Kenosha County (1.8% Asian), Cook County (7.9% Asian), Racine County (1.1% Asian), and Milwaukee County (4.8% Asian). Lake County is less Asian than neighboring DuPage County (13% Asian).

Lake County's Hispanic Population

177,631 residents of Lake County, or 24.9% of the population, identify as Hispanic. The share of Hispanic residents in Lake County is higher than in Illinois overall, where 18.8% of the population is Hispanic. Lake County ranks 4th statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Lake County's Hispanic population has grown by an estimated 3.3%. Hispanic residents' share of Lake County's population has increased from 24.1% to 24.9%.

Lake County is more Hispanic than neighboring Kenosha County (15.2% Hispanic), Racine County (15.1% Hispanic), DuPage County (16.1% Hispanic), and Milwaukee County (17% Hispanic). Lake County is less Hispanic than neighboring Cook County (26.8% Hispanic).

Lake County's Native American/Other Population

4,749 residents of Lake County, 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 Lake County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Lake County ranks 11th statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Lake County's Native American/Other population has grown by an estimated 5.9%. Native American/Other residents' share of Lake County's population has remained roughly unchanged at 0.7%.

Lake County is more Native American/Other than neighboring Cook County (0.5% Native American/Other), Racine County (0.6% Native American/Other), and DuPage County (0.5% Native American/Other). Lake County is less Native American/Other than neighboring Kenosha County (0.8% Native American/Other).

Lake County's Multiracial Population

23,810 residents of Lake County, or 3.3% of the population, identify as Multiracial. The share of Multiracial residents in Lake County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Lake County ranks 55th statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Lake County's Multiracial population has grown by an estimated 1.7%. Multiracial residents' share of Lake County's population has remained roughly unchanged at 3.3%.

Lake County is more Multiracial than neighboring Cook County (3% Multiracial). Lake County is less Multiracial than neighboring Kenosha County (4.7% Multiracial), Racine County (4.2% Multiracial), DuPage County (3.5% Multiracial), and Milwaukee County (4.1% 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.