St. Elmo, IL Demographics

A map of St. Elmo's Population by Race

St. Elmo, Illinois has an estimated population of 1,257, a less than 1% change from the 1,254 recorded in the 2020 Census. The population is 94.5% White, 3.7% Multiracial, 1.0% Hispanic, 0.8% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of St. Elmo, with one dot drawn for each person counted by the Census, color-coded by race.

St. Elmo has become 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 St. Elmo, that probability was 6.6% in 2020 and 10.5% in the most recent ACS estimates.

St. Elmo is ranked the 637th 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). St. Elmo was ranked the 627th most populous place in the 2020 Census.

St. Elmo's White Population

1,188 residents of St. Elmo, or 94.5% of the population, identify as White. The share of White residents in St. Elmo is significantly higher than in Illinois overall, where 58.1% of the population is White. St. Elmo ranks 65th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, St. Elmo's White population has declined by an estimated 2.0%. White residents' share of St. Elmo's population has decreased from 96.7% to 94.5%.

St. Elmo is more White than neighboring Brownstown (83.2% White), Altamont (91.6% White), and La Clede (41.5% White). St. Elmo is less White than neighboring St. Peter (98.2% White), and Beecher City (97.3% White).

St. Elmo's Black Population

10 residents of St. Elmo, or 0.8% of the population, identify as Black. The share of Black residents in St. Elmo is considerably lower than in Illinois overall, where 13.3% of the population is Black. St. Elmo ranks 1018th statewide in terms of Black residents as a share of the population, out of 1,461 places.

Since the 2020 Census, St. Elmo's Black population has grown by an estimated 233.3%. Black residents' share of St. Elmo's population has increased from 0.2% to 0.8%.

St. Elmo is more Black than neighboring Brownstown (0% Black), St. Peter (0% Black), Beecher City (0% Black), and La Clede (0% Black).

St. Elmo's Asian Population

0 residents of St. Elmo, or 0.0% of the population, identify as Asian. The share of Asian residents in St. Elmo is lower than in Illinois overall, where 5.9% of the population is Asian. St. Elmo ranks 954th statewide in terms of Asian residents as a share of the population, out of 1,461 places.

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

St. Elmo is less Asian than neighboring Altamont (4.3% Asian).

St. Elmo's Hispanic Population

13 residents of St. Elmo, or 1.0% of the population, identify as Hispanic. The share of Hispanic residents in St. Elmo is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. St. Elmo ranks 1178th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

Since the 2020 Census, St. Elmo's Hispanic population has declined by an estimated 18.8%. Hispanic residents' share of St. Elmo's population has remained roughly unchanged at 1.0%.

St. Elmo is more Hispanic than neighboring Brownstown (0.6% Hispanic), Altamont (0.4% Hispanic), St. Peter (0% Hispanic), Beecher City (0% Hispanic), and La Clede (0% Hispanic).

St. Elmo's Native American/Other Population

0 residents of St. Elmo, 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 St. Elmo is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. St. Elmo ranks 965th statewide in terms of Native American/Other residents as a share of the population, out of 1,461 places.

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

St. Elmo is less Native American/Other than neighboring Brownstown (1% Native American/Other), and Altamont (0.2% Native American/Other).

St. Elmo's Multiracial Population

46 residents of St. Elmo, or 3.7% of the population, identify as Multiracial. The share of Multiracial residents in St. Elmo is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. St. Elmo ranks 1361st statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, St. Elmo's Multiracial population has grown by an estimated 155.6%. Multiracial residents' share of St. Elmo's population has increased from 1.4% to 3.7%.

St. Elmo is more Multiracial than neighboring Altamont (2.7% Multiracial), St. Peter (1.8% Multiracial), and Beecher City (2.7% Multiracial). St. Elmo is less Multiracial than neighboring Brownstown (15.2% Multiracial), and La Clede (58.5% 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.