Assumption, IL Demographics

A map of Assumption's Population by Race

Assumption, Illinois has an estimated population of 1,205, an increase from the 1,155 recorded in the 2020 Census. The population is 88.3% White, 5.7% Multiracial, 3.3% Black, 2.3% Hispanic, 0.3% Native American/Other, and 0.0% Asian. This demographic dot map shows the population of Assumption, with one dot drawn for each person counted by the Census, color-coded by race.

Assumption has become considerably more 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 Assumption, that probability was 12.7% in 2020 and 21.5% in the most recent ACS estimates.

Assumption is ranked the 648th 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). Assumption was ranked the 650th most populous place in the 2020 Census.

Assumption's White Population

1,064 residents of Assumption, or 88.3% of the population, identify as White. The share of White residents in Assumption is significantly higher than in Illinois overall, where 58.1% of the population is White. Assumption ranks 421st statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Assumption's White population has declined by an estimated 1.3%. White residents' share of Assumption's population has decreased from 93.3% to 88.3%.

Assumption is more White than neighboring Tower Hill (87.7% White). Assumption is less White than neighboring Moweaqua (91.1% White), Pana (91.7% White), Owaneco (99.7% White), and Stonington (92.1% White).

Assumption's Black Population

40 residents of Assumption, or 3.3% of the population, identify as Black. The share of Black residents in Assumption is lower than in Illinois overall, where 13.3% of the population is Black. Assumption ranks 846th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Assumption's Black population has grown by an estimated 566.7%. Black residents' share of Assumption's population has increased from 0.5% to 3.3%.

Assumption is more Black than neighboring Moweaqua (0.1% Black), Pana (0.4% Black), Owaneco (0% Black), Tower Hill (0% Black), and Stonington (0.3% Black).

Assumption's Asian Population

0 residents of Assumption, or 0.0% of the population, identify as Asian. The share of Asian residents in Assumption is lower than in Illinois overall, where 5.9% of the population is Asian. Assumption ranks 943rd statewide in terms of Asian residents as a share of the population, out of 1,461 places.

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

Assumption is less Asian than neighboring Pana (1.5% Asian), and Stonington (2.1% Asian).

Assumption's Hispanic Population

28 residents of Assumption, or 2.3% of the population, identify as Hispanic. The share of Hispanic residents in Assumption is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Assumption ranks 962nd statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Assumption's Hispanic population has grown by an estimated 21.7%. Hispanic residents' share of Assumption's population has remained roughly unchanged at 2.3%.

Assumption is more Hispanic than neighboring Owaneco (0% Hispanic), and Tower Hill (0% Hispanic). Assumption is less Hispanic than neighboring Moweaqua (3.6% Hispanic), Pana (4.3% Hispanic), and Stonington (2.7% Hispanic).

Assumption's Native American/Other Population

4 residents of Assumption, or 0.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Assumption is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Assumption ranks 1139th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Assumption's Native American/Other population has grown from 0 to an estimated 4. Native American/Other residents' share of Assumption's population has remained roughly unchanged at 0.3%.

Assumption is more Native American/Other than neighboring Owaneco (0% Native American/Other), Tower Hill (0% Native American/Other), and Stonington (0.2% Native American/Other). Assumption is less Native American/Other than neighboring Moweaqua (2.9% Native American/Other), and Pana (0.4% Native American/Other).

Assumption's Multiracial Population

69 residents of Assumption, or 5.7% of the population, identify as Multiracial. The share of Multiracial residents in Assumption is slightly higher than in Illinois overall, where 3.4% of the population is Multiracial. Assumption ranks 538th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, Assumption's Multiracial population has grown by an estimated 50.0%. Multiracial residents' share of Assumption's population has increased from 4.0% to 5.7%.

Assumption is more Multiracial than neighboring Moweaqua (2.3% Multiracial), Pana (1.7% Multiracial), Owaneco (0.3% Multiracial), and Stonington (2.6% Multiracial). Assumption is less Multiracial than neighboring Tower Hill (12.3% 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.