Seymour, IL Demographics

A map of Seymour's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	270	296	100.0%	93.4%
Black	0	4	0.0%	1.3%
Asian	0	0	0.0%	0.0%
Hispanic	0	3	0.0%	0.9%
Native American/Other	0	2	0.0%	0.6%
Multiracial	0	12	0.0%	3.8%

Seymour, Illinois has an estimated population of 270, a large decrease from the 317 recorded in the 2020 Census. The population is 100.0% White, 0.0% Black, 0.0% Asian, 0.0% Hispanic, 0.0% Native American/Other, and 0.0% Multiracial. This demographic dot map shows the population of Seymour, with one dot drawn for each person counted by the Census, color-coded by race.

Seymour has become considerably 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 Seymour, that probability was 12.6% in 2020 and 0.0% in the most recent ACS estimates.

Seymour is ranked the 1116th 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). Seymour was ranked the 1059th most populous place in the 2020 Census.

Seymour's White Population

270 residents of Seymour, or 100.0% of the population, identify as White. The share of White residents in Seymour is significantly higher than in Illinois overall, where 58.1% of the population is White. Seymour ranks 415th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Seymour's White population has declined by an estimated 8.8%. White residents' share of Seymour's population has increased from 93.4% to 100.0%.

Seymour is more White than neighboring Bondville (83.4% White), White Heath (84% White), Mahomet (81.6% White), Lake of the Woods (94.6% White), and Mansfield (98.4% White).

Seymour's Black Population

0 residents of Seymour, or 0.0% of the population, identify as Black. The share of Black residents in Seymour is considerably lower than in Illinois overall, where 13.3% of the population is Black. Seymour ranks 498th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Seymour's Black population has declined by an estimated 100.0%. Black residents' share of Seymour's population has decreased from 1.3% to 0.0%.

Seymour is less Black than neighboring Bondville (6.2% Black), and Mahomet (0.3% Black).

Seymour's Asian Population

0 residents of Seymour, or 0.0% of the population, identify as Asian. The share of Asian residents in Seymour is lower than in Illinois overall, where 5.9% of the population is Asian. Seymour ranks 1029th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Seymour's Asian population has grown from 0 to an estimated 0. Asian residents' share of Seymour's population has remained roughly unchanged at 0.0%.

Seymour is less Asian than neighboring Bondville (0.2% Asian), and Mahomet (5.8% Asian).

Seymour's Hispanic Population

0 residents of Seymour, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Seymour is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Seymour ranks 1260th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Seymour's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Seymour's population has decreased from 0.9% to 0.0%.

Seymour is less Hispanic than neighboring Bondville (5.4% Hispanic), Mahomet (7.5% Hispanic), Lake of the Woods (1.4% Hispanic), and Mansfield (0.6% Hispanic).

Seymour's Native American/Other Population

0 residents of Seymour, 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 Seymour is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Seymour ranks 326th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Seymour's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Seymour's population has decreased from 0.6% to 0.0%.

Seymour is less Native American/Other than neighboring Mahomet (0.5% Native American/Other), and Lake of the Woods (0.8% Native American/Other).

Seymour's Multiracial Population

0 residents of Seymour, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in Seymour is slightly lower than in Illinois overall, where 3.4% of the population is Multiracial. Seymour ranks 606th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Seymour's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of Seymour's population has decreased from 3.8% to 0.0%.

Seymour is less Multiracial than neighboring Bondville (4.7% Multiracial), White Heath (16% Multiracial), Mahomet (4.2% Multiracial), Lake of the Woods (3.2% Multiracial), and Mansfield (1% 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.