St. Lucas, IA Demographics

A map of St. Lucas's Population by Race

St. Lucas, Iowa has an estimated population of 154, a decrease from the 167 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 St. Lucas, with one dot drawn for each person counted by the Census, color-coded by race.

St. Lucas has become less 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. Lucas, that probability was 2.4% in 2020 and 0.0% in the most recent ACS estimates.

St. Lucas is ranked the 757th 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. Lucas was ranked the 734th most populous place in the 2020 Census.

St. Lucas's White Population

154 residents of St. Lucas, or 100.0% of the population, identify as White. The share of White residents in St. Lucas is significantly higher than in Iowa overall, where 82.3% of the population is White. St. Lucas ranks 35th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, St. Lucas's White population has declined by an estimated 6.7%. White residents' share of St. Lucas's population has increased from 98.8% to 100.0%.

St. Lucas is more White than neighboring Fort Atkinson (98.6% White), Waucoma (96.9% White), Hawkeye (90.7% White), and Calmar (91.4% White).

St. Lucas's Black Population

0 residents of St. Lucas, or 0.0% of the population, identify as Black. The share of Black residents in St. Lucas is slightly lower than in Iowa overall, where 3.8% of the population is Black. St. Lucas ranks 600th statewide in terms of Black residents as a share of the population, out of 1,026 places.

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

St. Lucas is less Black than neighboring Hawkeye (2.1% Black).

St. Lucas's Asian Population

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

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

St. Lucas's Hispanic Population

0 residents of St. Lucas, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in St. Lucas is lower than in Iowa overall, where 7.3% of the population is Hispanic. St. Lucas ranks 933rd statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

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

St. Lucas is less Hispanic than neighboring Fort Atkinson (0.3% Hispanic), Waucoma (0.7% Hispanic), Hawkeye (2.3% Hispanic), and Calmar (7.3% Hispanic).

St. Lucas's Native American/Other Population

0 residents of St. Lucas, 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. Lucas is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. St. Lucas ranks 111th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, St. Lucas's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of St. Lucas's population has decreased from 1.2% to 0.0%.

St. Lucas's Multiracial Population

0 residents of St. Lucas, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in St. Lucas is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. St. Lucas ranks 960th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

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

St. Lucas is less Multiracial than neighboring Fort Atkinson (1.2% Multiracial), Waucoma (2.4% Multiracial), Hawkeye (5% Multiracial), and Calmar (1.3% 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.