Sidney, IL Demographics

A map of Sidney's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	879	1,120	93.9%	92.7%
Hispanic	34	25	3.6%	2.1%
Native American/Other	10	6	1.1%	0.5%
Multiracial	6	48	0.6%	4.0%
Asian	5	5	0.5%	0.4%
Black	2	4	0.2%	0.3%

Sidney, Illinois has an estimated population of 936, a large decrease from the 1,208 recorded in the 2020 Census. The population is 93.9% White, 3.6% Hispanic, 1.1% Native American/Other, 0.6% Multiracial, 0.5% Asian, and 0.2% Black. This demographic dot map shows the population of Sidney, with one dot drawn for each person counted by the Census, color-coded by race.

Sidney 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 Sidney, that probability was 13.8% in 2020 and 11.7% in the most recent ACS estimates.

Sidney is ranked the 715th 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). Sidney was ranked the 636th most populous place in the 2020 Census.

Sidney's White Population

879 residents of Sidney, or 93.9% of the population, identify as White. The share of White residents in Sidney is significantly higher than in Illinois overall, where 58.1% of the population is White. Sidney ranks 512th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sidney's White population has declined by an estimated 21.5%. White residents' share of Sidney's population has increased from 92.7% to 93.9%.

Sidney is more White than neighboring St. Joseph (91.9% White), and Homer (93.3% White). Sidney is less White than neighboring Philo (97.6% White), Broadlands (94.5% White), and Longview (98.7% White).

Sidney's Black Population

2 residents of Sidney, or 0.2% of the population, identify as Black. The share of Black residents in Sidney is considerably lower than in Illinois overall, where 13.3% of the population is Black. Sidney ranks 959th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sidney's Black population has declined by an estimated 50.0%. Black residents' share of Sidney's population has remained roughly unchanged at 0.2%.

Sidney is more Black than neighboring Philo (0% Black), St. Joseph (0% Black), and Longview (0% Black). Sidney is less Black than neighboring Homer (1.9% Black), and Broadlands (0.4% Black).

Sidney's Asian Population

5 residents of Sidney, or 0.5% of the population, identify as Asian. The share of Asian residents in Sidney is lower than in Illinois overall, where 5.9% of the population is Asian. Sidney ranks 708th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sidney's Asian population has remained roughly the same. Asian residents' share of Sidney's population has remained roughly unchanged at 0.5%.

Sidney is more Asian than neighboring Homer (0% Asian), Broadlands (0% Asian), and Longview (0% Asian). Sidney is less Asian than neighboring Philo (1.3% Asian), and St. Joseph (1.6% Asian).

Sidney's Hispanic Population

34 residents of Sidney, or 3.6% of the population, identify as Hispanic. The share of Hispanic residents in Sidney is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Sidney ranks 939th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sidney's Hispanic population has grown by an estimated 36.0%. Hispanic residents' share of Sidney's population has increased from 2.1% to 3.6%.

Sidney is more Hispanic than neighboring Philo (0.6% Hispanic), Homer (3.1% Hispanic), Broadlands (3.3% Hispanic), and Longview (0% Hispanic). Sidney is less Hispanic than neighboring St. Joseph (3.7% Hispanic).

Sidney's Native American/Other Population

10 residents of Sidney, or 1.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Sidney is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Sidney ranks 531st statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sidney's Native American/Other population has grown by an estimated 66.7%. Native American/Other residents' share of Sidney's population has increased from 0.5% to 1.1%.

Sidney is more Native American/Other than neighboring Philo (0% Native American/Other), St. Joseph (0.2% Native American/Other), Homer (0% Native American/Other), Broadlands (0% Native American/Other), and Longview (0% Native American/Other).

Sidney's Multiracial Population

6 residents of Sidney, or 0.6% of the population, identify as Multiracial. The share of Multiracial residents in Sidney is slightly lower than in Illinois overall, where 3.4% of the population is Multiracial. Sidney ranks 543rd statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sidney's Multiracial population has declined by an estimated 87.5%. Multiracial residents' share of Sidney's population has decreased from 4.0% to 0.6%.

Sidney is more Multiracial than neighboring Philo (0.5% Multiracial). Sidney is less Multiracial than neighboring St. Joseph (2.6% Multiracial), Homer (1.7% Multiracial), Broadlands (1.8% Multiracial), and Longview (1.3% 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.