Sullivan, IL Demographics

A map of Sullivan's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	4,138	4,111	95.2%	93.2%
Black	97	51	2.2%	1.2%
Multiracial	74	134	1.7%	3.0%
Hispanic	39	81	0.9%	1.8%
Asian	0	23	0.0%	0.5%
Native American/Other	0	13	0.0%	0.3%

Sullivan, Illinois has an estimated population of 4,348, a slight decrease from the 4,413 recorded in the 2020 Census. The population is 95.2% White, 2.2% Black, 1.7% Multiracial, 0.9% Hispanic, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Sullivan, with one dot drawn for each person counted by the Census, color-coded by race.

Sullivan 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 Sullivan, that probability was 13.1% in 2020 and 9.3% in the most recent ACS estimates.

Sullivan is ranked the 358th 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). Sullivan was ranked the 360th most populous place in the 2020 Census.

Sullivan's White Population

4,138 residents of Sullivan, or 95.2% of the population, identify as White. The share of White residents in Sullivan is significantly higher than in Illinois overall, where 58.1% of the population is White. Sullivan ranks 453rd statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sullivan's White population has remained roughly the same. White residents' share of Sullivan's population has increased from 93.2% to 95.2%.

Sullivan is more White than neighboring Allenville (86.5% White), Lovington (89.6% White), and Findlay (94.4% White). Sullivan is less White than neighboring Bethany (95.7% White), and Windsor (97% White).

Sullivan's Black Population

97 residents of Sullivan, or 2.2% of the population, identify as Black. The share of Black residents in Sullivan is considerably lower than in Illinois overall, where 13.3% of the population is Black. Sullivan ranks 524th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sullivan's Black population has grown by an estimated 90.2%. Black residents' share of Sullivan's population has increased from 1.2% to 2.2%.

Sullivan is more Black than neighboring Bethany (0% Black), Windsor (0% Black), and Findlay (0.4% Black). Sullivan is less Black than neighboring Allenville (2.4% Black), and Lovington (2.7% Black).

Sullivan's Asian Population

0 residents of Sullivan, or 0.0% of the population, identify as Asian. The share of Asian residents in Sullivan is lower than in Illinois overall, where 5.9% of the population is Asian. Sullivan ranks 620th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sullivan's Asian population has declined by an estimated 100.0%. Asian residents' share of Sullivan's population has decreased from 0.5% to 0.0%.

Sullivan is less Asian than neighboring Findlay (1.3% Asian).

Sullivan's Hispanic Population

39 residents of Sullivan, or 0.9% of the population, identify as Hispanic. The share of Hispanic residents in Sullivan is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Sullivan ranks 1011th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sullivan's Hispanic population has declined by an estimated 51.9%. Hispanic residents' share of Sullivan's population has decreased from 1.8% to 0.9%.

Sullivan is more Hispanic than neighboring Bethany (0% Hispanic), and Windsor (0.3% Hispanic). Sullivan is less Hispanic than neighboring Allenville (10.3% Hispanic), Lovington (3.2% Hispanic), and Findlay (1.9% Hispanic).

Sullivan's Native American/Other Population

0 residents of Sullivan, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Sullivan is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Sullivan ranks 888th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sullivan's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Sullivan's population has remained roughly unchanged at 0.0%.

Sullivan is less Native American/Other than neighboring Findlay (1.2% Native American/Other).

Sullivan's Multiracial Population

74 residents of Sullivan, or 1.7% of the population, identify as Multiracial. The share of Multiracial residents in Sullivan is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Sullivan ranks 916th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Sullivan's Multiracial population has declined by an estimated 44.8%. Multiracial residents' share of Sullivan's population has decreased from 3.0% to 1.7%.

Sullivan is more Multiracial than neighboring Allenville (0.8% Multiracial), and Findlay (0.7% Multiracial). Sullivan is less Multiracial than neighboring Lovington (4.6% Multiracial), Bethany (4.3% Multiracial), and Windsor (2.6% 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.