Crystal Lake, IL Demographics

A map of Crystal Lake's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	31,776	30,976	78.3%	76.9%
Hispanic	5,600	5,955	13.8%	14.8%
Asian	1,515	1,091	3.7%	2.7%
Multiracial	1,269	1,474	3.1%	3.7%
Black	250	586	0.6%	1.5%
Native American/Other	169	187	0.4%	0.5%

Crystal Lake, Illinois has an estimated population of 40,579, a less than 1% change from the 40,269 recorded in the 2020 Census. The population is 78.3% White, 13.8% Hispanic, 3.7% Asian, 3.1% Multiracial, 0.6% Black, and 0.4% Native American/Other. This demographic dot map shows the population of Crystal Lake, with one dot drawn for each person counted by the Census, color-coded by race.

Crystal Lake has become less racially diverse since the 2020 Census. It is considerably 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 Crystal Lake, that probability was 38.4% in 2020 and 36.5% in the most recent ACS estimates.

Crystal Lake is ranked the 39th 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). Crystal Lake was ranked the 40th most populous place in the 2020 Census.

Crystal Lake's White Population

31,776 residents of Crystal Lake, or 78.3% of the population, identify as White. The share of White residents in Crystal Lake is significantly higher than in Illinois overall, where 58.1% of the population is White. Crystal Lake ranks 1161st statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Crystal Lake's White population has grown by an estimated 2.6%. White residents' share of Crystal Lake's population has increased from 76.9% to 78.3%.

Crystal Lake is more White than neighboring Lake in the Hills (66.9% White), Algonquin (72.7% White), and Prairie Grove (76% White). Crystal Lake is less White than neighboring Ridgefield (100% White), and Lakewood (84.4% White).

Crystal Lake's Black Population

250 residents of Crystal Lake, or 0.6% of the population, identify as Black. The share of Black residents in Crystal Lake is considerably lower than in Illinois overall, where 13.3% of the population is Black. Crystal Lake ranks 447th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Crystal Lake's Black population has declined by an estimated 57.3%. Black residents' share of Crystal Lake's population has decreased from 1.5% to 0.6%.

Crystal Lake is more Black than neighboring Ridgefield (0% Black), and Prairie Grove (0.5% Black). Crystal Lake is less Black than neighboring Lake in the Hills (1.8% Black), and Algonquin (2.8% Black).

Crystal Lake's Asian Population

1,515 residents of Crystal Lake, or 3.7% of the population, identify as Asian. The share of Asian residents in Crystal Lake is slightly lower than in Illinois overall, where 5.9% of the population is Asian. Crystal Lake ranks 191st statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Crystal Lake's Asian population has grown by an estimated 38.9%. Asian residents' share of Crystal Lake's population has increased from 2.7% to 3.7%.

Crystal Lake is more Asian than neighboring Ridgefield (0% Asian). Crystal Lake is less Asian than neighboring Lake in the Hills (7.2% Asian), Lakewood (4.8% Asian), Algonquin (5.3% Asian), and Prairie Grove (15.7% Asian).

Crystal Lake's Hispanic Population

5,600 residents of Crystal Lake, or 13.8% of the population, identify as Hispanic. The share of Hispanic residents in Crystal Lake is slightly lower than in Illinois overall, where 18.8% of the population is Hispanic. Crystal Lake ranks 176th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Crystal Lake's Hispanic population has declined by an estimated 6.0%. Hispanic residents' share of Crystal Lake's population has decreased from 14.8% to 13.8%.

Crystal Lake is more Hispanic than neighboring Ridgefield (0% Hispanic), Lakewood (8.3% Hispanic), and Prairie Grove (2.6% Hispanic). Crystal Lake is less Hispanic than neighboring Lake in the Hills (20.3% Hispanic), and Algonquin (15.6% Hispanic).

Crystal Lake's Native American/Other Population

169 residents of Crystal Lake, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Crystal Lake is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Crystal Lake ranks 591st statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Crystal Lake's Native American/Other population has declined by an estimated 9.6%. Native American/Other residents' share of Crystal Lake's population has remained roughly unchanged at 0.4%.

Crystal Lake is more Native American/Other than neighboring Lake in the Hills (0.3% Native American/Other), Ridgefield (0% Native American/Other), Lakewood (0% Native American/Other), Algonquin (0.2% Native American/Other), and Prairie Grove (0% Native American/Other).

Crystal Lake's Multiracial Population

1,269 residents of Crystal Lake, or 3.1% of the population, identify as Multiracial. The share of Multiracial residents in Crystal Lake is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Crystal Lake ranks 650th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Crystal Lake's Multiracial population has declined by an estimated 13.9%. Multiracial residents' share of Crystal Lake's population has decreased from 3.7% to 3.1%.

Crystal Lake is more Multiracial than neighboring Ridgefield (0% Multiracial), and Lakewood (1.9% Multiracial). Crystal Lake is less Multiracial than neighboring Lake in the Hills (3.6% Multiracial), Algonquin (3.5% Multiracial), and Prairie Grove (5.3% 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.