Marseilles, IL Demographics

A map of Marseilles's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	3,663	4,152	85.6%	85.7%
Hispanic	216	347	5.0%	7.2%
Multiracial	205	256	4.8%	5.3%
Asian	167	22	3.9%	0.5%
Native American/Other	28	31	0.7%	0.6%
Black	0	37	0.0%	0.8%

Marseilles, Illinois has an estimated population of 4,279, a large decrease from the 4,845 recorded in the 2020 Census. The population is 85.6% White, 5.0% Hispanic, 4.8% Multiracial, 3.9% Asian, 0.7% Native American/Other, and 0.0% Black. This demographic dot map shows the population of Marseilles, with one dot drawn for each person counted by the Census, color-coded by race.

Marseilles 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 Marseilles, that probability was 25.8% in 2020 and 26.1% in the most recent ACS estimates.

Marseilles is ranked the 364th 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). Marseilles was ranked the 344th most populous place in the 2020 Census.

Marseilles's White Population

3,663 residents of Marseilles, or 85.6% of the population, identify as White. The share of White residents in Marseilles is significantly higher than in Illinois overall, where 58.1% of the population is White. Marseilles ranks 990th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Marseilles's White population has declined by an estimated 11.8%. White residents' share of Marseilles's population has remained roughly unchanged at 85.6%.

Marseilles is more White than neighboring Ottawa (82.6% White), and Wedron (0% White). Marseilles is less White than neighboring Seneca (86.6% White), Dayton (98.5% White), and Ransom (94.7% White).

Marseilles's Black Population

0 residents of Marseilles, or 0.0% of the population, identify as Black. The share of Black residents in Marseilles is considerably lower than in Illinois overall, where 13.3% of the population is Black. Marseilles ranks 685th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Marseilles's Black population has declined by an estimated 100.0%. Black residents' share of Marseilles's population has decreased from 0.8% to 0.0%.

Marseilles is less Black than neighboring Seneca (0.9% Black), and Ottawa (2.5% Black).

Marseilles's Asian Population

167 residents of Marseilles, or 3.9% of the population, identify as Asian. The share of Asian residents in Marseilles is slightly lower than in Illinois overall, where 5.9% of the population is Asian. Marseilles ranks 674th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Marseilles's Asian population has grown by an estimated 659.1%. Asian residents' share of Marseilles's population has increased from 0.5% to 3.9%.

Marseilles is more Asian than neighboring Seneca (0% Asian), Dayton (0% Asian), Ottawa (1% Asian), Ransom (0.4% Asian), and Wedron (0% Asian).

Marseilles's Hispanic Population

216 residents of Marseilles, or 5.0% of the population, identify as Hispanic. The share of Hispanic residents in Marseilles is considerably lower than in Illinois overall, where 18.8% of the population is Hispanic. Marseilles ranks 374th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Marseilles's Hispanic population has declined by an estimated 37.8%. Hispanic residents' share of Marseilles's population has decreased from 7.2% to 5.0%.

Marseilles is more Hispanic than neighboring Dayton (1.1% Hispanic), Ransom (2.4% Hispanic), and Wedron (0% Hispanic). Marseilles is less Hispanic than neighboring Seneca (10% Hispanic), and Ottawa (10.1% Hispanic).

Marseilles's Native American/Other Population

28 residents of Marseilles, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Marseilles is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Marseilles ranks 318th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Marseilles's Native American/Other population has declined by an estimated 9.7%. Native American/Other residents' share of Marseilles's population has remained roughly unchanged at 0.7%.

Marseilles is more Native American/Other than neighboring Seneca (0% Native American/Other), Dayton (0% Native American/Other), Ottawa (0% Native American/Other), Ransom (0% Native American/Other), and Wedron (0% Native American/Other).

Marseilles's Multiracial Population

205 residents of Marseilles, or 4.8% of the population, identify as Multiracial. The share of Multiracial residents in Marseilles is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Marseilles ranks 204th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Marseilles's Multiracial population has declined by an estimated 19.9%. Multiracial residents' share of Marseilles's population has decreased from 5.3% to 4.8%.

Marseilles is more Multiracial than neighboring Seneca (2.4% Multiracial), Dayton (0.4% Multiracial), Ottawa (3.9% Multiracial), Ransom (2.4% Multiracial), and Wedron (0% 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.