St. Peter, IL Demographics

A map of St. Peter's Population by Race

St. Peter, Illinois has an estimated population of 338, an increase from the 322 recorded in the 2020 Census. The population is 98.2% White, 1.8% Multiracial, 0.0% Black, 0.0% Asian, 0.0% Hispanic, and 0.0% Native American/Other. This demographic dot map shows the population of St. Peter, with one dot drawn for each person counted by the Census, color-coded by race.

St. Peter 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 St. Peter, that probability was 3.1% in 2020 and 3.5% in the most recent ACS estimates.

St. Peter is ranked the 1047th 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. Peter was ranked the 1053rd most populous place in the 2020 Census.

St. Peter's White Population

332 residents of St. Peter, or 98.2% of the population, identify as White. The share of White residents in St. Peter is significantly higher than in Illinois overall, where 58.1% of the population is White. St. Peter ranks 19th statewide in terms of White residents as a share of the population, out of 1,461 places.

Since the 2020 Census, St. Peter's White population has grown by an estimated 4.7%. White residents' share of St. Peter's population has remained roughly unchanged at 98.2%.

St. Peter is more White than neighboring Farina (95.3% White), Kinmundy (95.5% White), La Clede (41.5% White), St. Elmo (94.5% White), and Alma (95.1% White).

St. Peter's Black Population

0 residents of St. Peter, or 0.0% of the population, identify as Black. The share of Black residents in St. Peter is considerably lower than in Illinois overall, where 13.3% of the population is Black. St. Peter ranks 1104th statewide in terms of Black residents as a share of the population, out of 1,461 places.

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

St. Peter is less Black than neighboring St. Elmo (0.8% Black).

St. Peter's Asian Population

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

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

St. Peter is less Asian than neighboring Kinmundy (0.2% Asian).

St. Peter's Hispanic Population

0 residents of St. Peter, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in St. Peter is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. St. Peter ranks 1380th statewide in terms of Hispanic residents as a share of the population, out of 1,461 places.

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

St. Peter is less Hispanic than neighboring Farina (1.1% Hispanic), Kinmundy (1.1% Hispanic), St. Elmo (1% Hispanic), and Alma (0.4% Hispanic).

St. Peter's Native American/Other Population

0 residents of St. Peter, 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. Peter is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. St. Peter 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, St. Peter's Native American/Other population has grown from 0 to an estimated 0. Native American/Other residents' share of St. Peter's population has remained roughly unchanged at 0.0%.

St. Peter's Multiracial Population

6 residents of St. Peter, or 1.8% of the population, identify as Multiracial. The share of Multiracial residents in St. Peter is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. St. Peter ranks 1389th statewide in terms of Multiracial residents as a share of the population, out of 1,461 places.

Since the 2020 Census, St. Peter's Multiracial population has grown by an estimated 50.0%. Multiracial residents' share of St. Peter's population has increased from 1.2% to 1.8%.

St. Peter is less Multiracial than neighboring Farina (3.7% Multiracial), Kinmundy (3.1% Multiracial), La Clede (58.5% Multiracial), St. Elmo (3.7% Multiracial), and Alma (4.6% 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.