Somonauk, IL Demographics

A map of Somonauk's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,399	1,588	89.2%	88.9%
Hispanic	92	117	5.9%	6.6%
Multiracial	38	74	2.4%	4.1%
Native American/Other	25	1	1.6%	0.1%
Black	15	3	1.0%	0.2%
Asian	0	3	0.0%	0.2%

Somonauk, Illinois has an estimated population of 1,569, a large decrease from the 1,786 recorded in the 2020 Census. The population is 89.2% White, 5.9% Hispanic, 2.4% Multiracial, 1.6% Native American/Other, 1.0% Black, and 0.0% Asian. This demographic dot map shows the population of Somonauk, with one dot drawn for each person counted by the Census, color-coded by race.

Somonauk is about as racially diverse as it was in 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 Somonauk, that probability was 20.3% in 2020 and 20.1% in the most recent ACS estimates.

Somonauk is ranked the 567th 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). Somonauk was ranked the 524th most populous place in the 2020 Census.

Somonauk's White Population

1,399 residents of Somonauk, or 89.2% of the population, identify as White. The share of White residents in Somonauk is significantly higher than in Illinois overall, where 58.1% of the population is White. Somonauk ranks 845th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Somonauk's White population has declined by an estimated 11.9%. White residents' share of Somonauk's population has remained roughly unchanged at 89.2%.

Somonauk is more White than neighboring Sandwich (81% White), Millington (85.6% White), and Sheridan (47.5% White). Somonauk is less White than neighboring Lake Holiday (90.4% White), and Leland (90.8% White).

Somonauk's Black Population

15 residents of Somonauk, or 1.0% of the population, identify as Black. The share of Black residents in Somonauk is considerably lower than in Illinois overall, where 13.3% of the population is Black. Somonauk ranks 1059th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Somonauk's Black population has grown by an estimated 400.0%. Black residents' share of Somonauk's population has increased from 0.2% to 1.0%.

Somonauk is more Black than neighboring Lake Holiday (0.7% Black), Sandwich (0.4% Black), and Leland (0% Black). Somonauk is less Black than neighboring Millington (1.5% Black), and Sheridan (41.6% Black).

Somonauk's Asian Population

0 residents of Somonauk, or 0.0% of the population, identify as Asian. The share of Asian residents in Somonauk is lower than in Illinois overall, where 5.9% of the population is Asian. Somonauk ranks 945th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Somonauk's Asian population has declined by an estimated 100.0%. Asian residents' share of Somonauk's population has remained roughly unchanged at 0.0%.

Somonauk is less Asian than neighboring Lake Holiday (0.8% Asian), and Sandwich (1.1% Asian).

Somonauk's Hispanic Population

92 residents of Somonauk, or 5.9% of the population, identify as Hispanic. The share of Hispanic residents in Somonauk is considerably lower than in Illinois overall, where 18.8% of the population is Hispanic. Somonauk ranks 405th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Somonauk's Hispanic population has declined by an estimated 21.4%. Hispanic residents' share of Somonauk's population has decreased from 6.6% to 5.9%.

Somonauk is more Hispanic than neighboring Lake Holiday (2% Hispanic). Somonauk is less Hispanic than neighboring Sandwich (11% Hispanic), Millington (10.2% Hispanic), Sheridan (8.7% Hispanic), and Leland (8% Hispanic).

Somonauk's Native American/Other Population

25 residents of Somonauk, or 1.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Somonauk is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Somonauk ranks 1138th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Somonauk's Native American/Other population has grown by an estimated 2400.0%. Native American/Other residents' share of Somonauk's population has increased from 0.1% to 1.6%.

Somonauk is more Native American/Other than neighboring Lake Holiday (0% Native American/Other), Sandwich (1.4% Native American/Other), Millington (0% Native American/Other), Sheridan (0% Native American/Other), and Leland (0.1% Native American/Other).

Somonauk's Multiracial Population

38 residents of Somonauk, or 2.4% of the population, identify as Multiracial. The share of Multiracial residents in Somonauk is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Somonauk ranks 478th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Somonauk's Multiracial population has declined by an estimated 48.6%. Multiracial residents' share of Somonauk's population has decreased from 4.1% to 2.4%.

Somonauk is more Multiracial than neighboring Sheridan (2.3% Multiracial), and Leland (1.1% Multiracial). Somonauk is less Multiracial than neighboring Lake Holiday (6.2% Multiracial), Sandwich (5.2% Multiracial), and Millington (2.7% 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.