Round Lake, IL Demographics

A map of Round Lake's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	8,283	8,909	44.5%	47.6%
Hispanic	6,677	5,898	35.8%	31.5%
Asian	2,247	1,925	12.1%	10.3%
Black	687	1,142	3.7%	6.1%
Multiracial	417	755	2.2%	4.0%
Native American/Other	317	92	1.7%	0.5%

Round Lake, Illinois has an estimated population of 18,628, a less than 1% change from the 18,721 recorded in the 2020 Census. The population is 44.5% White, 35.8% Hispanic, 12.1% Asian, 3.7% Black, 2.2% Multiracial, and 1.7% Native American/Other. This demographic dot map shows the population of Round Lake, with one dot drawn for each person counted by the Census, color-coded by race.

Round Lake is about as racially diverse as it was in the 2020 Census. It is considerably more 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 Round Lake, that probability was 65.8% in 2020 and 65.7% in the most recent ACS estimates.

Round Lake is ranked the 132nd 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). Round Lake was ranked the 135th most populous place in the 2020 Census.

Round Lake's White Population

8,283 residents of Round Lake, or 44.5% of the population, identify as White. The share of White residents in Round Lake is considerably lower than in Illinois overall, where 58.1% of the population is White. Round Lake ranks 1363rd statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Round Lake's White population has declined by an estimated 7.0%. White residents' share of Round Lake's population has decreased from 47.6% to 44.5%.

Round Lake is more White than neighboring Round Lake Park (43.9% White), Round Lake Heights (34.5% White), and Round Lake Beach (34.5% White). Round Lake is less White than neighboring Hainesville (57.1% White), and Long Lake (47.6% White).

Round Lake's Black Population

687 residents of Round Lake, or 3.7% of the population, identify as Black. The share of Black residents in Round Lake is lower than in Illinois overall, where 13.3% of the population is Black. Round Lake ranks 193rd statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Round Lake's Black population has declined by an estimated 39.8%. Black residents' share of Round Lake's population has decreased from 6.1% to 3.7%.

Round Lake is more Black than neighboring Round Lake Park (0.8% Black), and Long Lake (1.7% Black). Round Lake is less Black than neighboring Hainesville (4.8% Black), Round Lake Heights (11.3% Black), and Round Lake Beach (4.2% Black).

Round Lake's Asian Population

2,247 residents of Round Lake, or 12.1% of the population, identify as Asian. The share of Asian residents in Round Lake is higher than in Illinois overall, where 5.9% of the population is Asian. Round Lake ranks 57th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Round Lake's Asian population has grown by an estimated 16.7%. Asian residents' share of Round Lake's population has increased from 10.3% to 12.1%.

Round Lake is more Asian than neighboring Round Lake Park (0.8% Asian), Hainesville (9% Asian), Long Lake (0.4% Asian), Round Lake Heights (5% Asian), and Round Lake Beach (2.2% Asian).

Round Lake's Hispanic Population

6,677 residents of Round Lake, or 35.8% of the population, identify as Hispanic. The share of Hispanic residents in Round Lake is significantly higher than in Illinois overall, where 18.8% of the population is Hispanic. Round Lake ranks 69th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Round Lake's Hispanic population has grown by an estimated 13.2%. Hispanic residents' share of Round Lake's population has increased from 31.5% to 35.8%.

Round Lake is more Hispanic than neighboring Hainesville (26.8% Hispanic). Round Lake is less Hispanic than neighboring Round Lake Park (49.5% Hispanic), Long Lake (47.4% Hispanic), Round Lake Heights (45.6% Hispanic), and Round Lake Beach (56.1% Hispanic).

Round Lake's Native American/Other Population

317 residents of Round Lake, or 1.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Round Lake is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Round Lake ranks 539th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Round Lake's Native American/Other population has grown by an estimated 244.6%. Native American/Other residents' share of Round Lake's population has increased from 0.5% to 1.7%.

Round Lake is more Native American/Other than neighboring Round Lake Park (0% Native American/Other), Hainesville (0% Native American/Other), Long Lake (0.1% Native American/Other), Round Lake Heights (0.4% Native American/Other), and Round Lake Beach (1% Native American/Other).

Round Lake's Multiracial Population

417 residents of Round Lake, or 2.2% of the population, identify as Multiracial. The share of Multiracial residents in Round Lake is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Round Lake ranks 522nd statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Round Lake's Multiracial population has declined by an estimated 44.8%. Multiracial residents' share of Round Lake's population has decreased from 4.0% to 2.2%.

Round Lake is more Multiracial than neighboring Round Lake Beach (2.1% Multiracial). Round Lake is less Multiracial than neighboring Round Lake Park (5% Multiracial), Hainesville (2.4% Multiracial), Long Lake (2.8% Multiracial), and Round Lake Heights (3.2% 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.