St. Clair County Demographics

A map of St. Clair County's Population by Race

St. Clair County, Missouri had a population of 9,284 in 2020. It was 92.3% White, 0.3% Black, 0.2% Asian, 1.9% Hispanic, 1.0% Native American/Other, and 4.3% Multiracial. This map presents the population of St. Clair County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

St. Clair County is the 89th most populous county of the 115 counties in Missouri.

St. Clair County's White Population

8,567 residents of St. Clair County identify as White, or 92.3%. This makes the White share of the population of St. Clair County larger than the White share of the population of Missouri (75.8% White). Of the 115 counties in Missouri, St. Clair County is ranked #37 in terms of White residents as a share of the population.

St. Clair County is more White than neighboring Cedar County (90.9% White), Henry County (90.2% White), and Polk County (91% White). St. Clair County is less White than neighboring Hickory County (92.4% White), and Benton County (92.5% White).

St. Clair County's Black Population

26 residents of St. Clair County identify as Black, or 0.3%. This makes the Black share of the population of St. Clair County slightly less than the Black share of the population of Missouri (11.3% Black). Of the 115 counties in Missouri, St. Clair County is ranked #98 in terms of Black residents as a share of the population.

St. Clair County is more Black than neighboring Hickory County (0.1% Black). St. Clair County is less Black than neighboring Cedar County (0.4% Black), Henry County (0.8% Black), Benton County (0.4% Black), and Polk County (0.8% Black).

St. Clair County's Asian Population

19 residents of St. Clair County identify as Asian, or 0.2%. This makes the Asian share of the population of St. Clair County roughly similar to the Asian share of the population of Missouri (2.1% Asian). Of the 115 counties in Missouri, St. Clair County is ranked #89 in terms of Asian residents as a share of the population.

St. Clair County is less Asian than neighboring Cedar County (0.3% Asian), Henry County (0.4% Asian), Benton County (0.3% Asian), and Polk County (0.4% Asian).

St. Clair County's Hispanic Population

178 residents of St. Clair County identify as Hispanic, or 1.9%. This makes the Hispanic share of the population of St. Clair County roughly similar to the Hispanic share of the population of Missouri (4.9% Hispanic). Of the 115 counties in Missouri, St. Clair County is ranked #72 in terms of Hispanic residents as a share of the population.

St. Clair County is more Hispanic than neighboring Cedar County (1.8% Hispanic), Hickory County (1.6% Hispanic), and Benton County (1.6% Hispanic). St. Clair County is less Hispanic than neighboring Henry County (2.6% Hispanic), and Polk County (2.5% Hispanic).

St. Clair County's Native American/Other Population

93 residents of St. Clair County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 1.0%. This makes the Native American/Other share of the population of St. Clair County roughly similar to the Native American/Other share of the population of Missouri (0.9% Native American/Other). Of the 115 counties in Missouri, St. Clair County is ranked #20 in terms of Native American/Other residents as a share of the population.

St. Clair County is more Native American/Other than neighboring Henry County (0.7% Native American/Other), Hickory County (0.8% Native American/Other), Benton County (0.7% Native American/Other), and Polk County (0.8% Native American/Other).

St. Clair County's Multiracial Population

401 residents of St. Clair County identify as Multiracial, or 4.3%. This makes the Multiracial share of the population of St. Clair County roughly similar to the Multiracial share of the population of Missouri (5% Multiracial). Of the 115 counties in Missouri, St. Clair County is ranked #70 in terms of Multiracial residents as a share of the population.

St. Clair County is less Multiracial than neighboring Cedar County (5.6% Multiracial), Henry County (5.2% Multiracial), Hickory County (4.9% Multiracial), Benton County (4.5% Multiracial), and Polk County (4.5% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.