St. Clair, MO Demographics

A map of St. Clair's Population by Race

St. Clair, Missouri has an estimated population of 4,789, a less than 1% change from the 4,791 recorded in the 2020 Census. The population is 89.6% White, 7.1% Multiracial, 2.4% Hispanic, 0.6% Black, 0.3% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of St. Clair, with one dot drawn for each person counted by the Census, color-coded by race.

St. Clair has become more racially diverse since the 2020 Census. It is considerably less diverse than Missouri overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In St. Clair, that probability was 18.0% in 2020 and 19.2% in the most recent ACS estimates.

St. Clair is ranked the 152nd most populous place in Missouri, out of 1,082 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. Clair was ranked the 146th most populous place in the 2020 Census.

St. Clair's White Population

4,289 residents of St. Clair, or 89.6% of the population, identify as White. The share of White residents in St. Clair is considerably higher than in Missouri overall, where 76.3% of the population is White. St. Clair ranks 477th statewide in terms of White residents as a share of the population, out of 1,082 places.

Since the 2020 Census, St. Clair's White population has remained roughly the same. White residents' share of St. Clair's population has decreased from 90.4% to 89.6%.

St. Clair is more White than neighboring Parkway (88.5% White), Union (86.5% White), Charmwood (0% White), and Miramiguoa Park (38.7% White). St. Clair is less White than neighboring Lake St. Clair (93% White).

St. Clair's Black Population

27 residents of St. Clair, or 0.6% of the population, identify as Black. The share of Black residents in St. Clair is considerably lower than in Missouri overall, where 10.9% of the population is Black. St. Clair ranks 361st statewide in terms of Black residents as a share of the population, out of 1,082 places.

Since the 2020 Census, St. Clair's Black population has declined by an estimated 56.5%. Black residents' share of St. Clair's population has decreased from 1.3% to 0.6%.

St. Clair is more Black than neighboring Parkway (0.5% Black), Lake St. Clair (0% Black), Charmwood (0% Black), and Miramiguoa Park (0% Black). St. Clair is less Black than neighboring Union (2.2% Black).

St. Clair's Asian Population

16 residents of St. Clair, or 0.3% of the population, identify as Asian. The share of Asian residents in St. Clair is comparable to the share in Missouri overall, where 2.1% of the population is Asian. St. Clair ranks 445th statewide in terms of Asian residents as a share of the population, out of 1,082 places.

Since the 2020 Census, St. Clair's Asian population has declined by an estimated 5.9%. Asian residents' share of St. Clair's population has remained roughly unchanged at 0.3%.

St. Clair is more Asian than neighboring Parkway (0% Asian), Lake St. Clair (0% Asian), and Charmwood (0% Asian). St. Clair is less Asian than neighboring Union (1.3% Asian), and Miramiguoa Park (3.2% Asian).

St. Clair's Hispanic Population

115 residents of St. Clair, or 2.4% of the population, identify as Hispanic. The share of Hispanic residents in St. Clair is slightly lower than in Missouri overall, where 5.2% of the population is Hispanic. St. Clair ranks 627th statewide in terms of Hispanic residents as a share of the population, out of 1,082 places.

Since the 2020 Census, St. Clair's Hispanic population has grown by an estimated 19.8%. Hispanic residents' share of St. Clair's population has remained roughly unchanged at 2.4%.

St. Clair is more Hispanic than neighboring Charmwood (0% Hispanic), and Miramiguoa Park (0% Hispanic). St. Clair is less Hispanic than neighboring Union (2.5% Hispanic).

St. Clair's Native American/Other Population

0 residents of St. Clair, 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. Clair is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. St. Clair ranks 382nd statewide in terms of Native American/Other residents as a share of the population, out of 1,082 places.

Since the 2020 Census, St. Clair's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of St. Clair's population has decreased from 0.9% to 0.0%.

St. Clair is less Native American/Other than neighboring Parkway (2.4% Native American/Other), and Union (0.1% Native American/Other).

St. Clair's Multiracial Population

342 residents of St. Clair, or 7.1% of the population, identify as Multiracial. The share of Multiracial residents in St. Clair is slightly higher than in Missouri overall, where 4.8% of the population is Multiracial. St. Clair ranks 462nd statewide in terms of Multiracial residents as a share of the population, out of 1,082 places.

Since the 2020 Census, St. Clair's Multiracial population has grown by an estimated 40.2%. Multiracial residents' share of St. Clair's population has increased from 5.1% to 7.1%.

St. Clair is more Multiracial than neighboring Parkway (6.3% Multiracial), Lake St. Clair (4.6% Multiracial), and Charmwood (0% Multiracial). St. Clair is less Multiracial than neighboring Union (7.5% Multiracial), and Miramiguoa Park (58.1% 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.