St. Charles, IA Demographics

A map of St. Charles's Population by Race

St. Charles, Iowa has an estimated population of 914, a dramatic increase from the 640 recorded in the 2020 Census. The population is 86.5% White, 10.4% Hispanic, 1.8% Multiracial, 1.3% Native American/Other, 0.0% Black, and 0.0% Asian. This demographic dot map shows the population of St. Charles, with one dot drawn for each person counted by the Census, color-coded by race.

St. Charles has become considerably more racially diverse since the 2020 Census. It is considerably less diverse than Iowa overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In St. Charles, that probability was 14.7% in 2020 and 24.0% in the most recent ACS estimates.

St. Charles is ranked the 312th most populous place in Iowa, out of 1,026 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. Charles was ranked the 399th most populous place in the 2020 Census.

St. Charles's White Population

791 residents of St. Charles, or 86.5% of the population, identify as White. The share of White residents in St. Charles is slightly higher than in Iowa overall, where 82.3% of the population is White. St. Charles ranks 588th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, St. Charles's White population has grown by an estimated 34.1%. White residents' share of St. Charles's population has decreased from 92.2% to 86.5%.

St. Charles is more White than neighboring Bevington (80% White). St. Charles is less White than neighboring St. Marys (97.9% White), Truro (94.4% White), Patterson (92.2% White), and Martensdale (88.9% White).

St. Charles's Black Population

0 residents of St. Charles, or 0.0% of the population, identify as Black. The share of Black residents in St. Charles is slightly lower than in Iowa overall, where 3.8% of the population is Black. St. Charles ranks 323rd statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, St. Charles's Black population has declined by an estimated 100.0%. Black residents' share of St. Charles's population has decreased from 0.6% to 0.0%.

St. Charles is less Black than neighboring Truro (0.6% Black), and Martensdale (1.1% Black).

St. Charles's Asian Population

0 residents of St. Charles, or 0.0% of the population, identify as Asian. The share of Asian residents in St. Charles is slightly lower than in Iowa overall, where 2.5% of the population is Asian. St. Charles ranks 543rd statewide in terms of Asian residents as a share of the population, out of 1,026 places.

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

St. Charles's Hispanic Population

95 residents of St. Charles, or 10.4% of the population, identify as Hispanic. The share of Hispanic residents in St. Charles is slightly higher than in Iowa overall, where 7.3% of the population is Hispanic. St. Charles ranks 749th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, St. Charles's Hispanic population has grown by an estimated 955.6%. Hispanic residents' share of St. Charles's population has increased from 1.4% to 10.4%.

St. Charles is more Hispanic than neighboring Bevington (0% Hispanic), St. Marys (0% Hispanic), Truro (4.4% Hispanic), Patterson (0% Hispanic), and Martensdale (3.3% Hispanic).

St. Charles's Native American/Other Population

12 residents of St. Charles, or 1.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. Charles is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. St. Charles ranks 189th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, St. Charles's Native American/Other population has grown by an estimated 140.0%. Native American/Other residents' share of St. Charles's population has increased from 0.8% to 1.3%.

St. Charles is more Native American/Other than neighboring St. Marys (0% Native American/Other), Truro (0% Native American/Other), Patterson (0% Native American/Other), and Martensdale (0.2% Native American/Other). St. Charles is less Native American/Other than neighboring Bevington (20% Native American/Other).

St. Charles's Multiracial Population

16 residents of St. Charles, or 1.8% of the population, identify as Multiracial. The share of Multiracial residents in St. Charles is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. St. Charles ranks 114th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, St. Charles's Multiracial population has declined by an estimated 50.0%. Multiracial residents' share of St. Charles's population has decreased from 5.0% to 1.8%.

St. Charles is more Multiracial than neighboring Bevington (0% Multiracial), and Truro (0.6% Multiracial). St. Charles is less Multiracial than neighboring St. Marys (2.1% Multiracial), Patterson (7.8% Multiracial), and Martensdale (6.5% 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.